got rid of explicit marginal comments (now stripped earlier from input);
authorwenzelm
Tue, 12 Feb 2002 20:28:27 +0100
changeset 12876 a70df1e5bf10
parent 12875 bda60442bf02
child 12877 b9635eb8a448
got rid of explicit marginal comments (now stripped earlier from input);
src/HOL/Tools/datatype_package.ML
src/HOL/Tools/inductive_package.ML
src/HOL/Tools/primrec_package.ML
src/HOL/Tools/recdef_package.ML
src/HOL/Tools/record_package.ML
src/HOL/Tools/typedef_package.ML
src/HOLCF/cont_consts.ML
src/HOLCF/domain/extender.ML
src/Pure/Isar/isar_cmd.ML
src/Pure/Isar/isar_syn.ML
src/Pure/Isar/isar_thy.ML
src/Pure/Isar/outer_parse.ML
src/Pure/Isar/outer_syntax.ML
src/Pure/axclass.ML
src/ZF/Tools/datatype_package.ML
src/ZF/Tools/ind_cases.ML
src/ZF/Tools/inductive_package.ML
src/ZF/Tools/primrec_package.ML
--- a/src/HOL/Tools/datatype_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOL/Tools/datatype_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -858,12 +858,13 @@
 
 val datatype_decl =
   Scan.option (P.$$$ "(" |-- P.name --| P.$$$ ")") -- P.type_args -- P.name -- P.opt_infix --
-    (P.$$$ "=" |-- P.enum1 "|" (P.name -- Scan.repeat P.typ -- P.opt_mixfix --| P.marg_comment));
+    (P.$$$ "=" |-- P.enum1 "|" (P.name -- Scan.repeat P.typ -- P.opt_mixfix));
 
 fun mk_datatype args =
   let
     val names = map (fn ((((None, _), t), _), _) => t | ((((Some t, _), _), _), _) => t) args;
-    val specs = map (fn ((((_, vs), t), mx), cons) => (vs, t, mx, map (fn ((x, y), z) => (x, y, z)) cons)) args;
+    val specs = map (fn ((((_, vs), t), mx), cons) =>
+      (vs, t, mx, map (fn ((x, y), z) => (x, y, z)) cons)) args;
   in #1 o add_datatype false names specs end;
 
 val datatypeP =
--- a/src/HOL/Tools/inductive_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOL/Tools/inductive_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -44,10 +44,8 @@
   val inductive_forall_name: string
   val inductive_forall_def: thm
   val rulify: thm -> thm
-  val inductive_cases: (((bstring * Args.src list) * string list) * Comment.text) list
-    -> theory -> theory
-  val inductive_cases_i: (((bstring * theory attribute list) * term list) * Comment.text) list
-    -> theory -> theory
+  val inductive_cases: ((bstring * Args.src list) * string list) list -> theory -> theory
+  val inductive_cases_i: ((bstring * theory attribute list) * term list) list -> theory -> theory
   val add_inductive_i: bool -> bool -> bstring -> bool -> bool -> bool -> term list ->
     ((bstring * term) * theory attribute list) list -> thm list -> theory -> theory *
       {defs: thm list, elims: thm list, raw_induct: thm, induct: thm,
@@ -587,8 +585,8 @@
     val cert_prop = Thm.cterm_of (Theory.sign_of thy) o prep_prop (ProofContext.init thy);
     val mk_cases = smart_mk_cases thy (Simplifier.simpset_of thy) o cert_prop;
 
-    val facts = args |> map (fn (((a, atts), props), comment) =>
-     (((a, map (prep_att thy) atts), map (Thm.no_attributes o single o mk_cases) props), comment));
+    val facts = args |> map (fn ((a, atts), props) =>
+     ((a, map (prep_att thy) atts), map (Thm.no_attributes o single o mk_cases) props));
   in thy |> IsarThy.theorems_i Drule.lemmaK facts |> #1 end;
 
 val inductive_cases = gen_inductive_cases Attrib.global_attribute ProofContext.read_prop;
@@ -874,10 +872,10 @@
   #1 o add_inductive true coind sets (map P.triple_swap intrs) monos;
 
 fun ind_decl coind =
-  (Scan.repeat1 P.term --| P.marg_comment) --
+  Scan.repeat1 P.term --
   (P.$$$ "intros" |--
-    P.!!! (Scan.repeat1 (P.opt_thm_name ":" -- P.prop --| P.marg_comment))) --
-  Scan.optional (P.$$$ "monos" |-- P.!!! P.xthms1 --| P.marg_comment) []
+    P.!!! (Scan.repeat1 (P.opt_thm_name ":" -- P.prop))) --
+  Scan.optional (P.$$$ "monos" |-- P.!!! P.xthms1) []
   >> (Toplevel.theory o mk_ind coind);
 
 val inductiveP =
@@ -888,7 +886,7 @@
 
 
 val ind_cases =
-  P.and_list1 (P.opt_thm_name ":" -- Scan.repeat1 P.prop -- P.marg_comment)
+  P.and_list1 (P.opt_thm_name ":" -- Scan.repeat1 P.prop)
   >> (Toplevel.theory o inductive_cases);
 
 val inductive_casesP =
--- a/src/HOL/Tools/primrec_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOL/Tools/primrec_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -291,7 +291,7 @@
 
 val primrec_decl =
   Scan.optional (P.$$$ "(" |-- P.name --| P.$$$ ")") "" --
-    Scan.repeat1 (P.opt_thm_name ":" -- P.prop --| P.marg_comment);
+    Scan.repeat1 (P.opt_thm_name ":" -- P.prop);
 
 val primrecP =
   OuterSyntax.command "primrec" "define primitive recursive functions on datatypes" K.thy_decl
--- a/src/HOL/Tools/recdef_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOL/Tools/recdef_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -310,8 +310,8 @@
       error ("No termination condition #" ^ string_of_int i ^
         " in recdef definition of " ^ quote name);
   in
-    thy |> IsarThy.theorem_i Drule.internalK
-      (((bname, atts), (HOLogic.mk_Trueprop tc, ([], []))), Comment.none) int
+    thy
+    |> IsarThy.theorem_i Drule.internalK ((bname, atts), (HOLogic.mk_Trueprop tc, ([], []))) int
   end;
 
 val recdef_tc = gen_recdef_tc Attrib.global_attribute Sign.intern_const;
@@ -340,8 +340,7 @@
 
 val recdef_decl =
   Scan.optional (P.$$$ "(" -- P.!!! (P.$$$ "permissive" -- P.$$$ ")") >> K false) true --
-  P.name -- P.term -- Scan.repeat1 (P.opt_thm_name ":" -- P.prop --| P.marg_comment)
-    -- Scan.option hints
+  P.name -- P.term -- Scan.repeat1 (P.opt_thm_name ":" -- P.prop) -- Scan.option hints
   >> (fn ((((p, f), R), eqs), src) => #1 o add_recdef p f R (map P.triple_swap eqs) src);
 
 val recdefP =
@@ -360,8 +359,7 @@
 
 
 val recdef_tc_decl =
-  P.opt_thm_name ":" -- P.xname -- Scan.option (P.$$$ "(" |-- P.nat --| P.$$$ ")")
-    --| P.marg_comment;
+  P.opt_thm_name ":" -- P.xname -- Scan.option (P.$$$ "(" |-- P.nat --| P.$$$ ")");
 
 fun mk_recdef_tc ((thm_name, name), i) = recdef_tc thm_name name i;
 
--- a/src/HOL/Tools/record_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOL/Tools/record_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -1086,8 +1086,8 @@
 local structure P = OuterParse and K = OuterSyntax.Keyword in
 
 val record_decl =
-  P.type_args -- P.name -- (P.$$$ "=" |-- Scan.option (P.typ --| P.$$$ "+")
-    -- Scan.repeat1 (P.const --| P.marg_comment));
+  P.type_args -- P.name --
+    (P.$$$ "=" |-- Scan.option (P.typ --| P.$$$ "+") -- Scan.repeat1 P.const);
 
 val recordP =
   OuterSyntax.command "record" "define extensible record" K.thy_decl
--- a/src/HOL/Tools/typedef_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOL/Tools/typedef_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -22,11 +22,9 @@
     {type_definition: thm, set_def: thm option, Rep: thm, Rep_inverse: thm,
       Abs_inverse: thm, Rep_inject: thm, Abs_inject: thm, Rep_cases: thm, Abs_cases: thm,
       Rep_induct: thm, Abs_induct: thm}
-  val typedef_proof:
-    (string * (bstring * string list * mixfix) * string * (string * string) option) * Comment.text
+  val typedef_proof: string * (bstring * string list * mixfix) * string * (string * string) option
     -> bool -> theory -> ProofHistory.T
-  val typedef_proof_i:
-    (string * (bstring * string list * mixfix) * term * (string * string) option) * Comment.text
+  val typedef_proof_i: string * (bstring * string list * mixfix) * term * (string * string) option
     -> bool -> theory -> ProofHistory.T
 end;
 
@@ -241,15 +239,12 @@
 
 (* typedef_proof interface *)
 
-fun gen_typedef_proof prep_term ((name, typ, set, opt_morphs), comment) int thy =
+fun gen_typedef_proof prep_term (name, typ, set, opt_morphs) int thy =
   let
     val (_, goal, goal_pat, att_result) =
       prepare_typedef prep_term true name typ set opt_morphs thy;
     val att = #1 o att_result;
-  in
-    thy
-    |> IsarThy.theorem_i Drule.internalK ((("", [att]), (goal, ([goal_pat], []))), comment) int
-  end;
+  in thy |> IsarThy.theorem_i Drule.internalK (("", [att]), (goal, ([goal_pat], []))) int end;
 
 val typedef_proof = gen_typedef_proof read_term;
 val typedef_proof_i = gen_typedef_proof cert_term;
@@ -262,18 +257,17 @@
 
 val typedeclP =
   OuterSyntax.command "typedecl" "type declaration (HOL)" K.thy_decl
-    (P.type_args -- P.name -- P.opt_infix --| P.marg_comment >> (fn ((vs, t), mx) =>
+    (P.type_args -- P.name -- P.opt_infix >> (fn ((vs, t), mx) =>
       Toplevel.theory (add_typedecls [(t, vs, mx)])));
 
 
 val typedef_proof_decl =
   Scan.option (P.$$$ "(" |-- P.name --| P.$$$ ")") --
     (P.type_args -- P.name) -- P.opt_infix -- (P.$$$ "=" |-- P.term) --
-    Scan.option (P.$$$ "morphisms" |-- P.!!! (P.name -- P.name)) --
-    P.marg_comment;
+    Scan.option (P.$$$ "morphisms" |-- P.!!! (P.name -- P.name));
 
-fun mk_typedef_proof (((((opt_name, (vs, t)), mx), A), morphs), comment) =
-  typedef_proof ((if_none opt_name (Syntax.type_name t mx), (t, vs, mx), A, morphs), comment);
+fun mk_typedef_proof ((((opt_name, (vs, t)), mx), A), morphs) =
+  typedef_proof (if_none opt_name (Syntax.type_name t mx), (t, vs, mx), A, morphs);
 
 val typedefP =
   OuterSyntax.command "typedef" "HOL type definition (requires non-emptiness proof)" K.thy_goal
@@ -285,5 +279,4 @@
 
 end;
 
-
 end;
--- a/src/HOLCF/cont_consts.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOLCF/cont_consts.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -110,7 +110,7 @@
   thy
   |> consts (map fst args)
   |> defs (false, map (fn ((c, _, mx), s) =>
-    (((Thm.def_name (Syntax.const_name c mx), s), []), Comment.none)) args);
+    ((Thm.def_name (Syntax.const_name c mx), s), [])) args);
 
 fun add_constdefs args = gen_add_constdefs add_consts IsarThy.add_defs args;
 fun add_constdefs_i args = gen_add_constdefs add_consts_i IsarThy.add_defs_i args;
@@ -122,12 +122,11 @@
 
 val constsP =
   OuterSyntax.command "consts" "declare constants (HOLCF)" K.thy_decl
-    (Scan.repeat1 (P.const --| P.marg_comment) >> (Toplevel.theory o add_consts));
+    (Scan.repeat1 P.const >> (Toplevel.theory o add_consts));
 
 val constdefsP =
   OuterSyntax.command "constdefs" "declare and define constants (HOLCF)" K.thy_decl
-    (Scan.repeat1 ((P.const --| P.marg_comment) -- (P.term --| P.marg_comment))
-      >> (Toplevel.theory o add_constdefs));
+    (Scan.repeat1 (P.const -- P.term) >> (Toplevel.theory o add_constdefs));
 
 
 val _ = OuterSyntax.add_parsers [constsP, constdefsP];
--- a/src/HOLCF/domain/extender.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/HOLCF/domain/extender.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -124,7 +124,7 @@
     P.name -- (P.$$$ "::" |-- P.typ)  --| P.$$$ ")" >> P.triple1;
 
 val cons_decl =
-  P.name -- Scan.repeat dest_decl -- P.opt_mixfix --| P.marg_comment
+  P.name -- Scan.repeat dest_decl -- P.opt_mixfix
   >> (fn ((c, ds), mx) => (c, mx, ds));
 
 val domain_decl = (P.type_args -- P.name >> Library.swap) -- (P.$$$ "=" |-- P.enum1 "|" cons_decl);
--- a/src/Pure/Isar/isar_cmd.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/Pure/Isar/isar_cmd.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -29,11 +29,10 @@
   val undo_theory: Toplevel.transition -> Toplevel.transition
   val undo: Toplevel.transition -> Toplevel.transition
   val kill: Toplevel.transition -> Toplevel.transition
-  val back: bool * Comment.text -> Toplevel.transition -> Toplevel.transition
-  val use: string * Comment.text -> Toplevel.transition -> Toplevel.transition
-  val use_mltext_theory: string * Comment.text -> Toplevel.transition -> Toplevel.transition
-  val use_mltext: bool -> string * Comment.text -> Toplevel.transition -> Toplevel.transition
-  val use_setup: string * Comment.text -> theory -> theory
+  val back: bool -> Toplevel.transition -> Toplevel.transition
+  val use: string -> Toplevel.transition -> Toplevel.transition
+  val use_mltext_theory: string -> Toplevel.transition -> Toplevel.transition
+  val use_mltext: bool -> string -> Toplevel.transition -> Toplevel.transition
   val use_commit: Toplevel.transition -> Toplevel.transition
   val cd: string -> Toplevel.transition -> Toplevel.transition
   val pwd: Toplevel.transition -> Toplevel.transition
@@ -47,7 +46,7 @@
   val print_syntax: Toplevel.transition -> Toplevel.transition
   val print_theorems: Toplevel.transition -> Toplevel.transition
   val print_locales: Toplevel.transition -> Toplevel.transition
-  val print_locale: Locale.expr * (Args.src Locale.element * Comment.text) list
+  val print_locale: Locale.expr * Args.src Locale.element list
     -> Toplevel.transition -> Toplevel.transition
   val print_attributes: Toplevel.transition -> Toplevel.transition
   val print_rules: Toplevel.transition -> Toplevel.transition
@@ -60,16 +59,13 @@
   val print_binds: Toplevel.transition -> Toplevel.transition
   val print_lthms: Toplevel.transition -> Toplevel.transition
   val print_cases: Toplevel.transition -> Toplevel.transition
-  val print_thms: (string list * (string * Args.src list) list) * Comment.text
+  val print_thms: string list * (string * Args.src list) list
     -> Toplevel.transition -> Toplevel.transition
-  val print_prfs: bool -> (string list * (string * Args.src list) list option) * Comment.text
+  val print_prfs: bool -> string list * (string * Args.src list) list option
     -> Toplevel.transition -> Toplevel.transition
-  val print_prop: (string list * string) * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
-  val print_term: (string list * string) * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
-  val print_type: (string list * string) * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
+  val print_prop: (string list * string) -> Toplevel.transition -> Toplevel.transition
+  val print_term: (string list * string) -> Toplevel.transition -> Toplevel.transition
+  val print_type: (string list * string) -> Toplevel.transition -> Toplevel.transition
 end;
 
 structure IsarCmd: ISAR_CMD =
@@ -135,26 +131,23 @@
 
 val undo = Toplevel.kill o undo_theory o undos_proof 1;
 val kill = Toplevel.kill o kill_proof;
-
-val back = Toplevel.proof o ProofHistory.back o Comment.ignore;
+val back = Toplevel.proof o ProofHistory.back;
 
 
 (* use ML text *)
 
-fun use (name, comment_ignore) = Toplevel.keep (fn state =>
+fun use name = Toplevel.keep (fn state =>
   Context.setmp (try Toplevel.theory_of state) ThyInfo.use name);
 
 (*passes changes of theory context*)
-val use_mltext_theory = Toplevel.theory' o Context.use_mltext_theory o Comment.ignore;
+val use_mltext_theory = Toplevel.theory' o Context.use_mltext_theory;
 
 (*ignore result theory context*)
-fun use_mltext v (txt, comment_ignore) = Toplevel.keep' (fn verb => fn state =>
+fun use_mltext v txt = Toplevel.keep' (fn verb => fn state =>
   (Context.use_mltext txt (v andalso verb) (try Toplevel.theory_of state)));
 
-val use_setup = Context.use_setup o Comment.ignore;
-
 (*Note: commit is dynamically bound*)
-val use_commit = use_mltext false ("commit();", Comment.none);
+val use_commit = use_mltext false "commit();";
 
 
 (* current working directory *)
@@ -196,8 +189,7 @@
 
 fun print_locale (import, body) = Toplevel.unknown_theory o Toplevel.keep (fn state =>
   let val thy = Toplevel.theory_of state in
-    Locale.print_locale thy import
-      (map (Locale.attribute (Attrib.local_attribute thy) o Comment.ignore) body)
+    Locale.print_locale thy import (map (Locale.attribute (Attrib.local_attribute thy)) body)
   end);
 
 val print_attributes = Toplevel.unknown_theory o
@@ -291,11 +283,10 @@
 fun print_item string_of (x, y) = Toplevel.keep (fn state =>
   writeln (string_of (Toplevel.enter_forward_proof state) x y));
 
-val print_thms = print_item string_of_thms o Comment.ignore;
-fun print_prfs full = print_item (string_of_prfs full) o Comment.ignore;
-val print_prop = print_item string_of_prop o Comment.ignore;
-val print_term = print_item string_of_term o Comment.ignore;
-val print_type = print_item string_of_type o Comment.ignore;
-
+val print_thms = print_item string_of_thms;
+fun print_prfs full = print_item (string_of_prfs full);
+val print_prop = print_item string_of_prop;
+val print_term = print_item string_of_term;
+val print_type = print_item string_of_type;
 
 end;
--- a/src/Pure/Isar/isar_syn.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/Pure/Isar/isar_syn.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -37,45 +37,45 @@
 (** markup commands **)
 
 val headerP = OuterSyntax.markup_command IsarOutput.Markup "header" "theory header" K.diag
-  (P.comment >> IsarThy.add_header);
+  (P.text >> IsarThy.add_header);
 
 val chapterP = OuterSyntax.markup_command IsarOutput.Markup "chapter" "chapter heading"
-  K.thy_heading (P.comment >> (Toplevel.theory o IsarThy.add_chapter));
+  K.thy_heading (P.text >> (Toplevel.theory o IsarThy.add_chapter));
 
 val sectionP = OuterSyntax.markup_command IsarOutput.Markup "section" "section heading"
-  K.thy_heading (P.comment >> (Toplevel.theory o IsarThy.add_section));
+  K.thy_heading (P.text >> (Toplevel.theory o IsarThy.add_section));
 
 val subsectionP = OuterSyntax.markup_command IsarOutput.Markup "subsection" "subsection heading"
-  K.thy_heading (P.comment >> (Toplevel.theory o IsarThy.add_subsection));
+  K.thy_heading (P.text >> (Toplevel.theory o IsarThy.add_subsection));
 
 val subsubsectionP =
   OuterSyntax.markup_command IsarOutput.Markup "subsubsection" "subsubsection heading"
-  K.thy_heading (P.comment >> (Toplevel.theory o IsarThy.add_subsubsection));
+  K.thy_heading (P.text >> (Toplevel.theory o IsarThy.add_subsubsection));
 
 val textP = OuterSyntax.markup_command IsarOutput.MarkupEnv "text" "formal comment (theory)"
-  K.thy_decl (P.comment >> (Toplevel.theory o IsarThy.add_text));
+  K.thy_decl (P.text >> (Toplevel.theory o IsarThy.add_text));
 
 val text_rawP = OuterSyntax.markup_command IsarOutput.Verbatim "text_raw"
   "raw document preparation text" K.thy_decl
-  (P.comment >> (Toplevel.theory o IsarThy.add_text_raw));
+  (P.text >> (Toplevel.theory o IsarThy.add_text_raw));
 
 
 val sectP = OuterSyntax.markup_command IsarOutput.Markup "sect" "formal comment (proof)"
-  K.prf_heading (P.comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_sect)));
+  K.prf_heading (P.text >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_sect)));
 
 val subsectP = OuterSyntax.markup_command IsarOutput.Markup "subsect" "formal comment (proof)"
-  K.prf_heading (P.comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_subsect)));
+  K.prf_heading (P.text >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_subsect)));
 
 val subsubsectP = OuterSyntax.markup_command IsarOutput.Markup "subsubsect"
   "formal comment (proof)" K.prf_heading
-  (P.comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_subsubsect)));
+  (P.text >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_subsubsect)));
 
 val txtP = OuterSyntax.markup_command IsarOutput.MarkupEnv "txt" "formal comment (proof)"
-  K.prf_decl (P.comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_txt)));
+  K.prf_decl (P.text >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_txt)));
 
 val txt_rawP = OuterSyntax.markup_command IsarOutput.Verbatim "txt_raw"
   "raw document preparation text (proof)" K.prf_decl
-  (P.comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_txt_raw)));
+  (P.text >> (Toplevel.print oo (Toplevel.proof o IsarThy.add_txt_raw)));
 
 
 
@@ -86,53 +86,51 @@
 val classesP =
   OuterSyntax.command "classes" "declare type classes" K.thy_decl
     (Scan.repeat1 (P.name -- Scan.optional ((P.$$$ "\\<subseteq>" || P.$$$ "<") |--
-        P.!!! (P.list1 P.xname)) [])
-      -- P.marg_comment >> (Toplevel.theory o IsarThy.add_classes));
+        P.!!! (P.list1 P.xname)) []) >> (Toplevel.theory o Theory.add_classes));
 
 val classrelP =
   OuterSyntax.command "classrel" "state inclusion of type classes (axiomatic!)" K.thy_decl
-    (P.xname -- ((P.$$$ "\\<subseteq>" || P.$$$ "<") |-- P.!!! P.xname) -- P.marg_comment
-      >> (Toplevel.theory o IsarThy.add_classrel));
+    (P.xname -- ((P.$$$ "\\<subseteq>" || P.$$$ "<") |-- P.!!! P.xname)
+    >> (Toplevel.theory o Theory.add_classrel o single));
 
 val defaultsortP =
   OuterSyntax.command "defaultsort" "declare default sort" K.thy_decl
-    (P.sort -- P.marg_comment >> (Toplevel.theory o IsarThy.add_defsort));
+    (P.sort >> (Toplevel.theory o Theory.add_defsort));
 
 
 (* types *)
 
 val typedeclP =
   OuterSyntax.command "typedecl" "type declaration" K.thy_decl
-    (P.type_args -- P.name -- P.opt_infix -- P.marg_comment >> (fn (((args, a), mx), cmt) =>
-      Toplevel.theory (IsarThy.add_typedecl ((a, args, mx), cmt))));
+    (P.type_args -- P.name -- P.opt_infix >> (fn ((args, a), mx) =>
+      Toplevel.theory (PureThy.add_typedecls [(a, args, mx)])));
 
 val typeabbrP =
   OuterSyntax.command "types" "declare type abbreviations" K.thy_decl
     (Scan.repeat1
-      (P.type_args -- P.name -- (P.$$$ "=" |-- P.!!! (P.typ -- P.opt_infix')) -- P.marg_comment)
-      >> (Toplevel.theory o IsarThy.add_tyabbrs o
-        map (fn (((args, a), (T, mx)), cmt) => ((a, args, T, mx), cmt))));
+      (P.type_args -- P.name -- (P.$$$ "=" |-- P.!!! (P.typ -- P.opt_infix')))
+      >> (Toplevel.theory o Theory.add_tyabbrs o
+        map (fn ((args, a), (T, mx)) => (a, args, T, mx))));
 
 val nontermP =
   OuterSyntax.command "nonterminals" "declare types treated as grammar nonterminal symbols"
-    K.thy_decl (Scan.repeat1 (P.name -- P.marg_comment)
-      >> (Toplevel.theory o IsarThy.add_nonterminals));
+    K.thy_decl (Scan.repeat1 P.name >> (Toplevel.theory o Theory.add_nonterminals));
 
 val aritiesP =
   OuterSyntax.command "arities" "state type arities (axiomatic!)" K.thy_decl
-    (Scan.repeat1 ((P.xname -- (P.$$$ "::" |-- P.!!! P.arity) >> P.triple2) -- P.marg_comment)
-      >> (Toplevel.theory o IsarThy.add_arities));
+    (Scan.repeat1 (P.xname -- (P.$$$ "::" |-- P.!!! P.arity) >> P.triple2)
+      >> (Toplevel.theory o Theory.add_arities));
 
 
 (* consts and syntax *)
 
 val judgmentP =
   OuterSyntax.command "judgment" "declare object-logic judgment" K.thy_decl
-    (P.const -- P.marg_comment >> (Toplevel.theory o IsarThy.add_judgment));
+    (P.const >> (Toplevel.theory o ObjectLogic.add_judgment));
 
 val constsP =
   OuterSyntax.command "consts" "declare constants" K.thy_decl
-    (Scan.repeat1 (P.const -- P.marg_comment) >> (Toplevel.theory o IsarThy.add_consts));
+    (Scan.repeat1 P.const >> (Toplevel.theory o Theory.add_consts));
 
 
 val mode_spec =
@@ -142,8 +140,7 @@
 
 val syntaxP =
   OuterSyntax.command "syntax" "declare syntactic constants" K.thy_decl
-    (opt_mode -- Scan.repeat1 (P.const -- P.marg_comment)
-      >> (Toplevel.theory o uncurry IsarThy.add_modesyntax));
+    (opt_mode -- Scan.repeat1 P.const >> (Toplevel.theory o uncurry Theory.add_modesyntax));
 
 
 (* translations *)
@@ -162,33 +159,31 @@
 
 val translationsP =
   OuterSyntax.command "translations" "declare syntax translation rules" K.thy_decl
-    (Scan.repeat1 (trans_line -- P.marg_comment) >> (Toplevel.theory o IsarThy.add_trrules));
+    (Scan.repeat1 trans_line >> (Toplevel.theory o Theory.add_trrules));
 
 
 (* axioms and definitions *)
 
 val axiomsP =
   OuterSyntax.command "axioms" "state arbitrary propositions (axiomatic!)" K.thy_decl
-    (Scan.repeat1 (P.spec_name -- P.marg_comment) >> (Toplevel.theory o IsarThy.add_axioms));
+    (Scan.repeat1 P.spec_name >> (Toplevel.theory o IsarThy.add_axioms));
 
 val opt_overloaded =
   Scan.optional (P.$$$ "(" |-- P.!!! ((P.$$$ "overloaded" >> K true) --| P.$$$ ")")) false;
 
 val defsP =
   OuterSyntax.command "defs" "define constants" K.thy_decl
-    (opt_overloaded -- Scan.repeat1 (P.spec_name -- P.marg_comment)
-  >> (Toplevel.theory o IsarThy.add_defs));
+    (opt_overloaded -- Scan.repeat1 P.spec_name >> (Toplevel.theory o IsarThy.add_defs));
 
 val constdefsP =
   OuterSyntax.command "constdefs" "declare and define constants" K.thy_decl
-    (Scan.repeat1 ((P.const -- P.marg_comment) -- (P.term -- P.marg_comment))
-      >> (Toplevel.theory o IsarThy.add_constdefs));
+    (Scan.repeat1 (P.const -- P.term) >> (Toplevel.theory o IsarThy.add_constdefs));
 
 
 (* theorems *)
 
 val in_locale = Scan.option ((P.$$$ "(" -- P.$$$ "in") |-- P.!!! (P.xname --| P.$$$ ")"));
-val name_facts = P.and_list1 (P.opt_thm_name "=" -- P.xthms1 -- P.marg_comment);
+val name_facts = P.and_list1 (P.opt_thm_name "=" -- P.xthms1);
 
 fun theorems kind = in_locale -- name_facts
   >> uncurry (#1 ooo IsarThy.smart_theorems kind);
@@ -203,93 +198,92 @@
 
 val declareP =
   OuterSyntax.command "declare" "declare theorems (improper)" K.thy_script
-    (in_locale -- (P.xthms1 -- P.marg_comment)
-    >> (Toplevel.theory o uncurry IsarThy.declare_theorems));
+    (in_locale -- P.xthms1 >> (Toplevel.theory o uncurry IsarThy.declare_theorems));
 
 
 (* name space entry path *)
 
 val globalP =
   OuterSyntax.command "global" "disable prefixing of theory name" K.thy_decl
-    (P.marg_comment >> (Toplevel.theory o IsarThy.global_path));
+    (Scan.succeed (Toplevel.theory PureThy.global_path));
 
 val localP =
   OuterSyntax.command "local" "enable prefixing of theory name" K.thy_decl
-    (P.marg_comment >> (Toplevel.theory o IsarThy.local_path));
+    (Scan.succeed (Toplevel.theory PureThy.local_path));
 
 val hideP =
   OuterSyntax.command "hide" "hide names from given name space" K.thy_decl
-    (P.name -- Scan.repeat1 P.xname -- P.marg_comment >> (Toplevel.theory o IsarThy.hide_space));
+    (P.name -- Scan.repeat1 P.xname >> (Toplevel.theory o IsarThy.hide_space));
 
 
 (* use ML text *)
 
 val useP =
   OuterSyntax.command "use" "eval ML text from file" K.diag
-    (P.name -- P.marg_comment >> (Toplevel.no_timing oo IsarCmd.use));
+    (P.name >> (Toplevel.no_timing oo IsarCmd.use));
 
 val mlP =
   OuterSyntax.command "ML" "eval ML text (diagnostic)" K.diag
-    (P.text -- P.marg_comment >> IsarCmd.use_mltext true);
+    (P.text >> IsarCmd.use_mltext true);
 
 val ml_commandP =
   OuterSyntax.command "ML_command" "eval ML text" K.diag
-    (P.text -- P.marg_comment >> (Toplevel.no_timing oo IsarCmd.use_mltext false));
+    (P.text >> (Toplevel.no_timing oo IsarCmd.use_mltext false));
 
 val ml_setupP =
   OuterSyntax.command "ML_setup" "eval ML text (may change theory)" K.thy_decl
-    (P.text -- P.marg_comment >> IsarCmd.use_mltext_theory);
+    (P.text >> IsarCmd.use_mltext_theory);
 
 val setupP =
   OuterSyntax.command "setup" "apply ML theory setup" K.thy_decl
-    (P.text -- P.marg_comment >> (Toplevel.theory o IsarCmd.use_setup));
+    (P.text >> (Toplevel.theory o Context.use_setup));
 
 val method_setupP =
   OuterSyntax.command "method_setup" "define proof method in ML" K.thy_decl
-    (((P.name -- P.!!! (P.$$$ "=" |-- P.text -- P.text) >> P.triple2)
-      -- P.marg_comment) >> (Toplevel.theory o IsarThy.method_setup));
+    (((P.name -- P.!!! (P.$$$ "=" |-- P.text -- P.text) >> P.triple2))
+      >> (Toplevel.theory o IsarThy.method_setup));
 
 
 (* translation functions *)
 
 val parse_ast_translationP =
   OuterSyntax.command "parse_ast_translation" "install parse ast translation functions" K.thy_decl
-    (P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.parse_ast_translation));
+    (P.text >> (Toplevel.theory o IsarThy.parse_ast_translation));
 
 val parse_translationP =
   OuterSyntax.command "parse_translation" "install parse translation functions" K.thy_decl
-    (P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.parse_translation));
+    (P.text >> (Toplevel.theory o IsarThy.parse_translation));
 
 val print_translationP =
   OuterSyntax.command "print_translation" "install print translation functions" K.thy_decl
-    (P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.print_translation));
+    (P.text >> (Toplevel.theory o IsarThy.print_translation));
 
 val typed_print_translationP =
   OuterSyntax.command "typed_print_translation" "install typed print translation functions"
-    K.thy_decl (P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.typed_print_translation));
+    K.thy_decl (P.text >> (Toplevel.theory o IsarThy.typed_print_translation));
 
 val print_ast_translationP =
   OuterSyntax.command "print_ast_translation" "install print ast translation functions" K.thy_decl
-    (P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.print_ast_translation));
+    (P.text >> (Toplevel.theory o IsarThy.print_ast_translation));
 
 val token_translationP =
   OuterSyntax.command "token_translation" "install token translation functions" K.thy_decl
-    (P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.token_translation));
+    (P.text >> (Toplevel.theory o IsarThy.token_translation));
 
 
 (* oracles *)
 
 val oracleP =
   OuterSyntax.command "oracle" "install oracle" K.thy_decl
-    ((P.name --| P.$$$ "=") -- P.text -- P.marg_comment >> (Toplevel.theory o IsarThy.add_oracle));
+    ((P.name --| P.$$$ "=") -- P.text >> (Toplevel.theory o IsarThy.add_oracle));
 
 
 (* locales *)
 
 val locale_val =
   (P.locale_expr --
-    Scan.optional (P.$$$ "+" |-- P.!!! (Scan.repeat1 (P.locale_element -- P.marg_comment))) [] ||
-  Scan.repeat1 (P.locale_element -- P.marg_comment) >> pair Locale.empty);
+    Scan.optional (P.$$$ "+" |-- P.!!! (Scan.repeat1 P.locale_element)) [] ||
+  Scan.repeat1 P.locale_element >> pair Locale.empty);
 
 val localeP =
   OuterSyntax.command "locale" "define named proof context" K.thy_decl
@@ -305,7 +299,7 @@
 val in_locale_elems = in_locale --
   Scan.optional (P.$$$ "(" |-- Scan.repeat1 P.locale_element --| P.!!! (P.$$$ ")")) [];
 
-val statement = P.and_list1 (P.opt_thm_name ":" -- Scan.repeat1 P.propp -- P.marg_comment);
+val statement = P.and_list1 (P.opt_thm_name ":" -- Scan.repeat1 P.propp);
 val statement' = P.$$$ "(" |-- statement --| P.!!! (P.$$$ ")") || statement;
 
 fun gen_theorem k =
@@ -337,11 +331,11 @@
 
 (* facts *)
 
-val facts = P.and_list1 (P.xthms1 -- P.marg_comment);
+val facts = P.and_list1 P.xthms1;
 
 val thenP =
   OuterSyntax.command "then" "forward chaining" K.prf_chain
-    (P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.chain)));
+    (Scan.succeed (Toplevel.print o (Toplevel.proof IsarThy.chain)));
 
 val fromP =
   OuterSyntax.command "from" "forward chaining from given facts" K.prf_chain
@@ -360,7 +354,7 @@
 
 val fixP =
   OuterSyntax.command "fix" "fix variables (Skolem constants)" K.prf_asm
-    (P.and_list1 (Scan.repeat1 P.name -- Scan.option (P.$$$ "::" |-- P.typ) -- P.marg_comment)
+    (P.and_list1 (Scan.repeat1 P.name -- Scan.option (P.$$$ "::" |-- P.typ))
       >> (Toplevel.print oo (Toplevel.proof o IsarThy.fix)));
 
 val assumeP =
@@ -374,19 +368,19 @@
 val defP =
   OuterSyntax.command "def" "local definition" K.prf_asm
     (P.opt_thm_name ":" -- (P.name -- ((P.$$$ "\\<equiv>" || P.$$$ "==") |-- P.!!! P.termp))
-      -- P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.local_def)));
+      >> (Toplevel.print oo (Toplevel.proof o IsarThy.local_def)));
 
 val obtainP =
   OuterSyntax.command "obtain" "generalized existence"
     K.prf_asm_goal
     (Scan.optional
-      (P.and_list1 (Scan.repeat1 P.name -- Scan.option (P.$$$ "::" |-- P.typ) -- P.marg_comment)
+      (P.and_list1 (Scan.repeat1 P.name -- Scan.option (P.$$$ "::" |-- P.typ))
         --| P.$$$ "where") [] -- statement
     >> (Toplevel.print oo (Toplevel.proof o IsarThy.obtain)));
 
 val letP =
   OuterSyntax.command "let" "bind text variables" K.prf_decl
-    (P.and_list1 (P.enum1 "and" P.term -- (P.$$$ "=" |-- P.term) -- P.marg_comment)
+    (P.and_list1 (P.enum1 "and" P.term -- (P.$$$ "=" |-- P.term))
       >> (Toplevel.print oo (Toplevel.proof o IsarThy.let_bind)));
 
 val case_spec =
@@ -395,109 +389,105 @@
 
 val caseP =
   OuterSyntax.command "case" "invoke local context" K.prf_asm
-    (case_spec -- P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.invoke_case)));
+    (case_spec >> (Toplevel.print oo (Toplevel.proof o IsarThy.invoke_case)));
 
 
 (* proof structure *)
 
 val beginP =
   OuterSyntax.command "{" "begin explicit proof block" K.prf_open
-    (P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.begin_block)));
+    (Scan.succeed (Toplevel.print o (Toplevel.proof IsarThy.begin_block)));
 
 val endP =
   OuterSyntax.command "}" "end explicit proof block" K.prf_close
-    (P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.end_block)));
+    (Scan.succeed (Toplevel.print o (Toplevel.proof IsarThy.end_block)));
 
 val nextP =
   OuterSyntax.command "next" "enter next proof block" K.prf_block
-    (P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.next_block)));
+    (Scan.succeed (Toplevel.print o (Toplevel.proof IsarThy.next_block)));
 
 
 (* end proof *)
 
 val qedP =
   OuterSyntax.command "qed" "conclude (sub-)proof" K.qed_block
-    (Scan.option (P.method -- P.interest) -- P.marg_comment >> IsarThy.qed);
+    (Scan.option P.method >> IsarThy.qed);
 
 val terminal_proofP =
   OuterSyntax.command "by" "terminal backward proof" K.qed
-    (P.method -- P.interest -- Scan.option (P.method -- P.interest)
-      -- P.marg_comment >> IsarThy.terminal_proof);
+    (P.method -- Scan.option P.method >> IsarThy.terminal_proof);
 
 val default_proofP =
   OuterSyntax.command ".." "default proof" K.qed
-    (P.marg_comment >> IsarThy.default_proof);
+    (Scan.succeed IsarThy.default_proof);
 
 val immediate_proofP =
   OuterSyntax.command "." "immediate proof" K.qed
-    (P.marg_comment >> IsarThy.immediate_proof);
+    (Scan.succeed IsarThy.immediate_proof);
 
 val done_proofP =
   OuterSyntax.command "done" "done proof" K.qed
-    (P.marg_comment >> IsarThy.done_proof);
+    (Scan.succeed IsarThy.done_proof);
 
 val skip_proofP =
   OuterSyntax.improper_command "sorry" "skip proof (quick-and-dirty mode only!)" K.qed
-    (P.marg_comment >> IsarThy.skip_proof);
+    (Scan.succeed IsarThy.skip_proof);
 
 val forget_proofP =
   OuterSyntax.command "oops" "forget proof" K.qed_global
-    (P.marg_comment >> IsarThy.forget_proof);
-
+    (Scan.succeed IsarThy.forget_proof);
 
 
 (* proof steps *)
 
 val deferP =
   OuterSyntax.command "defer" "shuffle internal proof state" K.prf_script
-    (Scan.option P.nat -- P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.defer)));
+    (Scan.option P.nat >> (Toplevel.print oo (Toplevel.proof o IsarThy.defer)));
 
 val preferP =
   OuterSyntax.command "prefer" "shuffle internal proof state" K.prf_script
-    (P.nat -- P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.prefer)));
+    (P.nat >> (Toplevel.print oo (Toplevel.proof o IsarThy.prefer)));
 
 val applyP =
   OuterSyntax.command "apply" "initial refinement step (unstructured)" K.prf_script
-    (P.method -- P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.apply)));
+    (P.method >> (Toplevel.print oo (Toplevel.proof o IsarThy.apply)));
 
 val apply_endP =
   OuterSyntax.command "apply_end" "terminal refinement (unstructured)" K.prf_script
-    (P.method -- P.marg_comment >> (Toplevel.print oo (Toplevel.proof o IsarThy.apply_end)));
+    (P.method >> (Toplevel.print oo (Toplevel.proof o IsarThy.apply_end)));
 
 val proofP =
   OuterSyntax.command "proof" "backward proof" K.prf_block
-    (P.interest -- Scan.option (P.method -- P.interest) -- P.marg_comment
-      >> (Toplevel.print oo (Toplevel.proof o IsarThy.proof)));
+    (Scan.option P.method >> (Toplevel.print oo (Toplevel.proof o IsarThy.proof)));
 
 
 (* calculational proof commands *)
 
 val calc_args =
-  Scan.option (P.$$$ "(" |-- P.!!! ((P.xthms1 --| P.$$$ ")") -- P.interest));
+  Scan.option (P.$$$ "(" |-- P.!!! ((P.xthms1 --| P.$$$ ")")));
 
 val alsoP =
   OuterSyntax.command "also" "combine calculation and current facts" K.prf_decl
-    (calc_args -- P.marg_comment >> IsarThy.also);
+    (calc_args >> IsarThy.also);
 
 val finallyP =
   OuterSyntax.command "finally" "combine calculation and current facts, exhibit result" K.prf_chain
-    (calc_args -- P.marg_comment >> IsarThy.finally);
+    (calc_args >> IsarThy.finally);
 
 val moreoverP =
   OuterSyntax.command "moreover" "augment calculation by current facts" K.prf_decl
-    (P.marg_comment >> IsarThy.moreover);
+    (Scan.succeed IsarThy.moreover);
 
 val ultimatelyP =
   OuterSyntax.command "ultimately" "augment calculation by current facts, exhibit result"
-    K.prf_chain (P.marg_comment >> IsarThy.ultimately);
+    K.prf_chain (Scan.succeed IsarThy.ultimately);
 
 
 (* proof navigation *)
 
 val backP =
   OuterSyntax.command "back" "backtracking of proof command" K.prf_script
-    (Scan.optional (P.$$$ "!" >> K true) false -- P.marg_comment >>
-      (Toplevel.print oo IsarCmd.back));
+    (Scan.optional (P.$$$ "!" >> K true) false >> (Toplevel.print oo IsarCmd.back));
 
 
 (* history *)
@@ -611,29 +601,27 @@
 
 val print_thmsP =
   OuterSyntax.improper_command "thm" "print theorems" K.diag
-    (opt_modes -- P.xthms1 -- P.marg_comment >> (Toplevel.no_timing oo IsarCmd.print_thms));
+    (opt_modes -- P.xthms1 >> (Toplevel.no_timing oo IsarCmd.print_thms));
 
 val print_prfsP =
   OuterSyntax.improper_command "prf" "print proof terms of theorems" K.diag
-    (opt_modes -- Scan.option P.xthms1 -- P.marg_comment >>
-      (Toplevel.no_timing oo IsarCmd.print_prfs false));
+    (opt_modes -- Scan.option P.xthms1 >> (Toplevel.no_timing oo IsarCmd.print_prfs false));
 
 val print_full_prfsP =
   OuterSyntax.improper_command "full_prf" "print full proof terms of theorems" K.diag
-    (opt_modes -- Scan.option P.xthms1 -- P.marg_comment >>
-      (Toplevel.no_timing oo IsarCmd.print_prfs true));
+    (opt_modes -- Scan.option P.xthms1 >> (Toplevel.no_timing oo IsarCmd.print_prfs true));
 
 val print_propP =
   OuterSyntax.improper_command "prop" "read and print proposition" K.diag
-    (opt_modes -- P.term -- P.marg_comment >> (Toplevel.no_timing oo IsarCmd.print_prop));
+    (opt_modes -- P.term >> (Toplevel.no_timing oo IsarCmd.print_prop));
 
 val print_termP =
   OuterSyntax.improper_command "term" "read and print term" K.diag
-    (opt_modes -- P.term -- P.marg_comment >> (Toplevel.no_timing oo IsarCmd.print_term));
+    (opt_modes -- P.term >> (Toplevel.no_timing oo IsarCmd.print_term));
 
 val print_typeP =
   OuterSyntax.improper_command "typ" "read and print type" K.diag
-    (opt_modes -- P.typ -- P.marg_comment >> (Toplevel.no_timing oo IsarCmd.print_type));
+    (opt_modes -- P.typ >> (Toplevel.no_timing oo IsarCmd.print_type));
 
 
 
--- a/src/Pure/Isar/isar_thy.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/Pure/Isar/isar_thy.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -8,206 +8,154 @@
 
 signature ISAR_THY =
 sig
-  val add_header: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val add_chapter: Comment.text -> theory -> theory
-  val add_section: Comment.text -> theory -> theory
-  val add_subsection: Comment.text -> theory -> theory
-  val add_subsubsection: Comment.text -> theory -> theory
-  val add_text: Comment.text -> theory -> theory
-  val add_text_raw: Comment.text -> theory -> theory
-  val add_sect: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val add_subsect: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val add_subsubsect: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val add_txt: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val add_txt_raw: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val global_path: Comment.text -> theory -> theory
-  val local_path: Comment.text -> theory -> theory
-  val hide_space: (string * xstring list) * Comment.text -> theory -> theory
-  val hide_space_i: (string * string list) * Comment.text -> theory -> theory
-  val add_classes: (bclass * xclass list) list * Comment.text -> theory -> theory
-  val add_classes_i: (bclass * class list) list * Comment.text  -> theory -> theory
-  val add_classrel: (xclass * xclass) * Comment.text -> theory -> theory
-  val add_classrel_i: (class * class) * Comment.text -> theory -> theory
-  val add_defsort: string * Comment.text -> theory -> theory
-  val add_defsort_i: sort * Comment.text -> theory -> theory
-  val add_nonterminals: (bstring * Comment.text) list -> theory -> theory
-  val add_tyabbrs: ((bstring * string list * string * mixfix) * Comment.text) list
-    -> theory -> theory
-  val add_tyabbrs_i: ((bstring * string list * typ * mixfix) * Comment.text) list
-    -> theory -> theory
-  val add_arities: ((xstring * string list * string) * Comment.text) list -> theory -> theory
-  val add_arities_i: ((string * sort list * sort) * Comment.text) list -> theory -> theory
-  val add_typedecl: (bstring * string list * mixfix) * Comment.text -> theory -> theory
-  val add_consts: ((bstring * string * mixfix) * Comment.text) list -> theory -> theory
-  val add_consts_i: ((bstring * typ * mixfix) * Comment.text) list -> theory -> theory
-  val add_modesyntax: string * bool -> ((bstring * string * mixfix) * Comment.text) list
-    -> theory -> theory
-  val add_modesyntax_i: string * bool -> ((bstring * typ * mixfix) * Comment.text) list
-    -> theory -> theory
-  val add_trrules: ((xstring * string) Syntax.trrule * Comment.text) list -> theory -> theory
-  val add_trrules_i: (Syntax.ast Syntax.trrule * Comment.text) list -> theory -> theory
-  val add_judgment: (bstring * string * mixfix) * Comment.text -> theory -> theory
-  val add_judgment_i: (bstring * typ * mixfix) * Comment.text -> theory -> theory
-  val add_axioms: (((bstring * string) * Args.src list) * Comment.text) list -> theory -> theory
-  val add_axioms_i: (((bstring * term) * theory attribute list) * Comment.text) list
-    -> theory -> theory
-  val add_defs: bool * (((bstring * string) * Args.src list) * Comment.text) list
-    -> theory -> theory
-  val add_defs_i: bool * (((bstring * term) * theory attribute list) * Comment.text) list
-    -> theory -> theory
-  val add_constdefs: (((bstring * string * mixfix) * Comment.text) * (string * Comment.text)) list
-    -> theory -> theory
-  val add_constdefs_i: (((bstring * typ * mixfix) * Comment.text) * (term * Comment.text)) list
-    -> theory -> theory
-  val theorems: string ->
-    (((bstring * Args.src list) * (xstring * Args.src list) list) * Comment.text) list
+  val add_header: string -> Toplevel.transition -> Toplevel.transition
+  val add_chapter: string -> theory -> theory
+  val add_section: string -> theory -> theory
+  val add_subsection: string -> theory -> theory
+  val add_subsubsection: string -> theory -> theory
+  val add_text: string -> theory -> theory
+  val add_text_raw: string -> theory -> theory
+  val add_sect: string -> ProofHistory.T -> ProofHistory.T
+  val add_subsect: string -> ProofHistory.T -> ProofHistory.T
+  val add_subsubsect: string -> ProofHistory.T -> ProofHistory.T
+  val add_txt: string -> ProofHistory.T -> ProofHistory.T
+  val add_txt_raw: string -> ProofHistory.T -> ProofHistory.T
+  val hide_space: string * xstring list -> theory -> theory
+  val hide_space_i: string * string list -> theory -> theory
+  val add_axioms: ((bstring * string) * Args.src list) list -> theory -> theory
+  val add_axioms_i: ((bstring * term) * theory attribute list) list -> theory -> theory
+  val add_defs: bool * ((bstring * string) * Args.src list) list -> theory -> theory
+  val add_defs_i: bool * ((bstring * term) * theory attribute list) list -> theory -> theory
+  val add_constdefs: ((bstring * string * mixfix) * string) list -> theory -> theory
+  val add_constdefs_i: ((bstring * typ * mixfix) * term) list -> theory -> theory
+  val theorems: string -> ((bstring * Args.src list) * (xstring * Args.src list) list) list
     -> theory -> theory * (string * thm list) list
   val theorems_i: string ->
-    (((bstring * theory attribute list)
-      * (thm list * theory attribute list) list) * Comment.text) list
+    ((bstring * theory attribute list) * (thm list * theory attribute list) list) list
     -> theory -> theory * (string * thm list) list
   val locale_theorems: string -> xstring ->
-    (((bstring * Args.src list) * (xstring * Args.src list) list) * Comment.text) list
+    ((bstring * Args.src list) * (xstring * Args.src list) list) list
     -> theory -> theory * (bstring * thm list) list
   val locale_theorems_i: string -> string ->
-    (((bstring * Proof.context attribute list)
-      * (thm list * Proof.context attribute list) list) * Comment.text) list
+    ((bstring * Proof.context attribute list)
+      * (thm list * Proof.context attribute list) list) list
     -> theory -> theory * (string * thm list) list
   val smart_theorems: string -> xstring option ->
-    (((bstring * Args.src list) * (xstring * Args.src list) list) * Comment.text) list
+    ((bstring * Args.src list) * (xstring * Args.src list) list) list
     -> theory -> theory * (string * thm list) list
-  val declare_theorems: xstring option -> (xstring * Args.src list) list * Comment.text
-    -> theory -> theory
+  val declare_theorems: xstring option -> (xstring * Args.src list) list -> theory -> theory
   val apply_theorems: (xstring * Args.src list) list -> theory -> theory * thm list
   val apply_theorems_i: (thm list * theory attribute list) list -> theory -> theory * thm list
-  val have_facts: (((string * Args.src list) * (string * Args.src list) list) * Comment.text) list
-    -> ProofHistory.T -> ProofHistory.T
-  val have_facts_i: (((string * Proof.context attribute list) *
-    (thm * Proof.context attribute list) list) * Comment.text) list
+  val have_facts: ((string * Args.src list) * (string * Args.src list) list) list
     -> ProofHistory.T -> ProofHistory.T
-  val from_facts: ((string * Args.src list) list * Comment.text) list
-    -> ProofHistory.T -> ProofHistory.T
-  val from_facts_i: ((thm * Proof.context attribute list) list * Comment.text) list
+  val have_facts_i: ((string * Proof.context attribute list) *
+    (thm * Proof.context attribute list) list) list -> ProofHistory.T -> ProofHistory.T
+  val from_facts: (string * Args.src list) list list -> ProofHistory.T -> ProofHistory.T
+  val from_facts_i: (thm * Proof.context attribute list) list list
     -> ProofHistory.T -> ProofHistory.T
-  val with_facts: ((string * Args.src list) list * Comment.text) list
-    -> ProofHistory.T -> ProofHistory.T
-  val with_facts_i: ((thm * Proof.context attribute list) list * Comment.text) list
+  val with_facts: (string * Args.src list) list list -> ProofHistory.T -> ProofHistory.T
+  val with_facts_i: (thm * Proof.context attribute list) list list
     -> ProofHistory.T -> ProofHistory.T
-  val chain: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val fix: ((string list * string option) * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val fix_i: ((string list * typ option) * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val let_bind: ((string list * string) * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val let_bind_i: ((term list * term) * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val invoke_case: (string * string option list * Args.src list) * Comment.text
+  val chain: ProofHistory.T -> ProofHistory.T
+  val fix: (string list * string option) list -> ProofHistory.T -> ProofHistory.T
+  val fix_i: (string list * typ option) list -> ProofHistory.T -> ProofHistory.T
+  val let_bind: (string list * string) list -> ProofHistory.T -> ProofHistory.T
+  val let_bind_i: (term list * term) list -> ProofHistory.T -> ProofHistory.T
+  val invoke_case: string * string option list * Args.src list -> ProofHistory.T -> ProofHistory.T
+  val invoke_case_i: string * string option list * Proof.context attribute list
     -> ProofHistory.T -> ProofHistory.T
-  val invoke_case_i: (string * string option list * Proof.context attribute list) * Comment.text
-    -> ProofHistory.T -> ProofHistory.T
-  val theorem: string
-    -> ((bstring * Args.src list) * (string * (string list * string list))) * Comment.text
+  val theorem: string -> (bstring * Args.src list) * (string * (string list * string list))
     -> bool -> theory -> ProofHistory.T
-  val theorem_i: string -> ((bstring * theory attribute list) *
-    (term * (term list * term list))) * Comment.text -> bool -> theory -> ProofHistory.T
+  val theorem_i: string -> (bstring * theory attribute list) *
+    (term * (term list * term list)) -> bool -> theory -> ProofHistory.T
   val multi_theorem: string -> bstring * Args.src list ->
     Args.src Locale.element list ->
-    (((bstring * Args.src list) * (string * (string list * string list)) list)
-      * Comment.text) list -> bool -> theory -> ProofHistory.T
+    ((bstring * Args.src list) * (string * (string list * string list)) list) list
+    -> bool -> theory -> ProofHistory.T
   val multi_theorem_i: string -> bstring * theory attribute list ->
     Proof.context attribute Locale.element_i list ->
-    (((bstring * theory attribute list) * (term * (term list * term list)) list)
-      * Comment.text) list -> bool -> theory -> ProofHistory.T
+    ((bstring * theory attribute list) * (term * (term list * term list)) list) list
+    -> bool -> theory -> ProofHistory.T
   val locale_multi_theorem: string -> bstring * Args.src list ->
     xstring -> Args.src Locale.element list ->
-    (((bstring * Args.src list) * (string * (string list * string list)) list)
-      * Comment.text) list -> bool -> theory -> ProofHistory.T
+    ((bstring * Args.src list) * (string * (string list * string list)) list) list
+    -> bool -> theory -> ProofHistory.T
   val locale_multi_theorem_i: string -> bstring * theory attribute list ->
     string -> Proof.context attribute Locale.element_i list ->
-    (((bstring * Proof.context attribute list) * (term * (term list * term list)) list)
-      * Comment.text) list -> bool -> theory -> ProofHistory.T
+    ((bstring * Proof.context attribute list) * (term * (term list * term list)) list) list
+    -> bool -> theory -> ProofHistory.T
   val smart_multi_theorem: string -> bstring * Args.src list ->
     xstring Library.option * Args.src Locale.element list ->
-    (((bstring * Args.src list) * (string * (string list * string list)) list)
-      * Comment.text) list -> bool -> theory -> ProofHistory.T
-  val assume: (((string * Args.src list) * (string * (string list * string list)) list)
-    * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val assume_i: (((string * Proof.context attribute list) * (term * (term list * term list)) list)
-    * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val presume: (((string * Args.src list) * (string * (string list * string list)) list)
-    * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val presume_i: (((string * Proof.context attribute list) * (term * (term list * term list)) list)
-    * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val have: (((string * Args.src list) *
-    (string * (string list * string list)) list) * Comment.text) list
+    ((bstring * Args.src list) * (string * (string list * string list)) list) list
+    -> bool -> theory -> ProofHistory.T
+  val assume: ((string * Args.src list) * (string * (string list * string list)) list) list
     -> ProofHistory.T -> ProofHistory.T
-  val have_i: (((string * Proof.context attribute list) *
-    (term * (term list * term list)) list) * Comment.text) list
+  val assume_i:
+    ((string * Proof.context attribute list) * (term * (term list * term list)) list) list
+    -> ProofHistory.T -> ProofHistory.T
+  val presume: ((string * Args.src list) * (string * (string list * string list)) list) list
+    -> ProofHistory.T -> ProofHistory.T
+  val presume_i:
+    ((string * Proof.context attribute list) * (term * (term list * term list)) list) list
     -> ProofHistory.T -> ProofHistory.T
-  val hence: (((string * Args.src list) *
-    (string * (string list * string list)) list) * Comment.text) list
+  val have: ((string * Args.src list) * (string * (string list * string list)) list) list
     -> ProofHistory.T -> ProofHistory.T
-  val hence_i: (((string * Proof.context attribute list) *
-    (term * (term list * term list)) list) * Comment.text) list
+  val have_i: ((string * Proof.context attribute list) *
+    (term * (term list * term list)) list) list -> ProofHistory.T -> ProofHistory.T
+  val hence: ((string * Args.src list) * (string * (string list * string list)) list) list
     -> ProofHistory.T -> ProofHistory.T
-  val show: (((string * Args.src list) *
-    (string * (string list * string list)) list) * Comment.text) list
+  val hence_i: ((string * Proof.context attribute list) *
+    (term * (term list * term list)) list) list -> ProofHistory.T -> ProofHistory.T
+  val show: ((string * Args.src list) * (string * (string list * string list)) list) list
     -> bool -> ProofHistory.T -> ProofHistory.T
-  val show_i: (((string * Proof.context attribute list) *
-    (term * (term list * term list)) list) * Comment.text) list
-    -> bool -> ProofHistory.T -> ProofHistory.T
-  val thus: (((string * Args.src list) *
-    (string * (string list * string list)) list) * Comment.text) list
-    -> bool -> ProofHistory.T -> ProofHistory.T
-  val thus_i: (((string * Proof.context attribute list) *
-    (term * (term list * term list)) list) * Comment.text) list
+  val show_i: ((string * Proof.context attribute list) *
+    (term * (term list * term list)) list) list -> bool -> ProofHistory.T -> ProofHistory.T
+  val thus: ((string * Args.src list) * (string * (string list * string list)) list) list
     -> bool -> ProofHistory.T -> ProofHistory.T
-  val local_def: ((string * Args.src list) * (string * (string * string list)))
-    * Comment.text -> ProofHistory.T -> ProofHistory.T
-  val local_def_i: ((string * Args.src list) * (string * (term * term list)))
-    * Comment.text -> ProofHistory.T -> ProofHistory.T
-  val obtain: ((string list * string option) * Comment.text) list
-    * (((string * Args.src list) * (string * (string list * string list)) list)
-      * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val obtain_i: ((string list * typ option) * Comment.text) list
-    * (((string * Proof.context attribute list) * (term * (term list * term list)) list)
-      * Comment.text) list -> ProofHistory.T -> ProofHistory.T
-  val begin_block: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val next_block: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val end_block: Comment.text -> ProofHistory.T -> ProofHistory.T
-  val defer: int option * Comment.text -> ProofHistory.T -> ProofHistory.T
-  val prefer: int * Comment.text -> ProofHistory.T -> ProofHistory.T
-  val apply: Method.text * Comment.text -> ProofHistory.T -> ProofHistory.T
-  val apply_end: Method.text * Comment.text -> ProofHistory.T -> ProofHistory.T
-  val proof: (Comment.interest * (Method.text * Comment.interest) option) * Comment.text
+  val thus_i: ((string * Proof.context attribute list)
+    * (term * (term list * term list)) list) list -> bool -> ProofHistory.T -> ProofHistory.T
+  val local_def: (string * Args.src list) * (string * (string * string list))
+    -> ProofHistory.T -> ProofHistory.T
+  val local_def_i: (string * Args.src list) * (string * (term * term list))
+    -> ProofHistory.T -> ProofHistory.T
+  val obtain: (string list * string option) list
+    * ((string * Args.src list) * (string * (string list * string list)) list) list
     -> ProofHistory.T -> ProofHistory.T
-  val qed: (Method.text * Comment.interest) option * Comment.text
+  val obtain_i: (string list * typ option) list
+    * ((string * Proof.context attribute list) * (term * (term list * term list)) list) list
+    -> ProofHistory.T -> ProofHistory.T
+  val begin_block: ProofHistory.T -> ProofHistory.T
+  val next_block: ProofHistory.T -> ProofHistory.T
+  val end_block: ProofHistory.T -> ProofHistory.T
+  val defer: int option -> ProofHistory.T -> ProofHistory.T
+  val prefer: int -> ProofHistory.T -> ProofHistory.T
+  val apply: Method.text -> ProofHistory.T -> ProofHistory.T
+  val apply_end: Method.text -> ProofHistory.T -> ProofHistory.T
+  val proof: Method.text option -> ProofHistory.T -> ProofHistory.T
+  val qed: Method.text option -> Toplevel.transition -> Toplevel.transition
+  val terminal_proof: Method.text * Method.text option
     -> Toplevel.transition -> Toplevel.transition
-  val terminal_proof: ((Method.text * Comment.interest) * (Method.text * Comment.interest) option)
-    * Comment.text -> Toplevel.transition -> Toplevel.transition
-  val default_proof: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val immediate_proof: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val done_proof: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val skip_proof: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val forget_proof: Comment.text -> Toplevel.transition -> Toplevel.transition
+  val default_proof: Toplevel.transition -> Toplevel.transition
+  val immediate_proof: Toplevel.transition -> Toplevel.transition
+  val done_proof: Toplevel.transition -> Toplevel.transition
+  val skip_proof: Toplevel.transition -> Toplevel.transition
+  val forget_proof: Toplevel.transition -> Toplevel.transition
   val get_thmss: (string * Args.src list) list -> Proof.state -> thm list
-  val also: ((string * Args.src list) list * Comment.interest) option * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
-  val also_i: (thm list * Comment.interest) option * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
-  val finally: ((string * Args.src list) list * Comment.interest) option * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
-  val finally_i: (thm list * Comment.interest) option * Comment.text
-    -> Toplevel.transition -> Toplevel.transition
-  val moreover: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val ultimately: Comment.text -> Toplevel.transition -> Toplevel.transition
-  val parse_ast_translation: string * Comment.text -> theory -> theory
-  val parse_translation: string * Comment.text -> theory -> theory
-  val print_translation: string * Comment.text -> theory -> theory
-  val typed_print_translation: string * Comment.text -> theory -> theory
-  val print_ast_translation: string * Comment.text -> theory -> theory
-  val token_translation: string * Comment.text -> theory -> theory
-  val method_setup: (bstring * string * string) * Comment.text -> theory -> theory
-  val add_oracle: (bstring * string) * Comment.text -> theory -> theory
-  val add_locale: bstring * Locale.expr * (Args.src Locale.element * Comment.text) list
-    -> theory -> theory
+  val also: (string * Args.src list) list option -> Toplevel.transition -> Toplevel.transition
+  val also_i: thm list option -> Toplevel.transition -> Toplevel.transition
+  val finally: (string * Args.src list) list option -> Toplevel.transition -> Toplevel.transition
+  val finally_i: thm list option -> Toplevel.transition -> Toplevel.transition
+  val moreover: Toplevel.transition -> Toplevel.transition
+  val ultimately: Toplevel.transition -> Toplevel.transition
+  val parse_ast_translation: string -> theory -> theory
+  val parse_translation: string -> theory -> theory
+  val print_translation: string -> theory -> theory
+  val typed_print_translation: string -> theory -> theory
+  val print_ast_translation: string -> theory -> theory
+  val token_translation: string -> theory -> theory
+  val method_setup: bstring * string * string -> theory -> theory
+  val add_oracle: bstring * string -> theory -> theory
+  val add_locale: bstring * Locale.expr * Args.src Locale.element list -> theory -> theory
   val begin_theory: string -> string list -> (string * bool) list -> theory
   val end_theory: theory -> theory
   val kill_theory: string -> unit
@@ -225,21 +173,20 @@
 
 (* markup commands *)
 
-fun add_header comment =
+fun add_header x =
   Toplevel.keep (fn state => if Toplevel.is_toplevel state then () else raise Toplevel.UNDEF);
 
 fun add_text _ x = x;
 fun add_text_raw _ x = x;
 
-fun add_heading add present txt thy =
-  (Context.setmp (Some thy) present (Comment.string_of txt); add txt thy);
+fun add_heading add present txt thy = (Context.setmp (Some thy) present txt; add txt thy);
 
 val add_chapter = add_heading add_text Present.section;
 val add_section = add_heading add_text Present.section;
 val add_subsection = add_heading add_text Present.subsection;
 val add_subsubsection = add_heading add_text Present.subsubsection;
 
-fun add_txt (_: Comment.text) = ProofHistory.apply I;
+fun add_txt (_: string) = ProofHistory.apply I;
 val add_txt_raw = add_txt;
 val add_sect = add_txt;
 val add_subsect = add_txt;
@@ -248,9 +195,6 @@
 
 (* name spaces *)
 
-fun global_path comment_ignore = PureThy.global_path;
-fun local_path comment_ignore = PureThy.local_path;
-
 local
 
 val kinds =
@@ -259,7 +203,7 @@
     can (Sign.certify_tycon sg) c orelse can (Sign.certify_tyabbr sg) c),
   (Sign.constK, can o Sign.certify_const)];
 
-fun gen_hide intern ((kind, xnames), comment_ignore) thy =
+fun gen_hide intern (kind, xnames) thy =
   (case assoc (kinds, kind) of
     Some check =>
       let
@@ -280,51 +224,27 @@
 end;
 
 
-(* signature and syntax *)
-
-val add_classes = Theory.add_classes o Comment.ignore;
-val add_classes_i = Theory.add_classes_i o Comment.ignore;
-val add_classrel = Theory.add_classrel o single o Comment.ignore;
-val add_classrel_i = Theory.add_classrel_i o single o Comment.ignore;
-val add_defsort = Theory.add_defsort o Comment.ignore;
-val add_defsort_i = Theory.add_defsort_i o Comment.ignore;
-val add_nonterminals = Theory.add_nonterminals o map Comment.ignore;
-val add_tyabbrs = Theory.add_tyabbrs o map Comment.ignore;
-val add_tyabbrs_i = Theory.add_tyabbrs_i o map Comment.ignore;
-val add_arities = Theory.add_arities o map Comment.ignore;
-val add_arities_i = Theory.add_arities_i o map Comment.ignore;
-val add_typedecl = PureThy.add_typedecls o single o Comment.ignore;
-val add_consts = Theory.add_consts o map Comment.ignore;
-val add_consts_i = Theory.add_consts_i o map Comment.ignore;
-fun add_modesyntax mode = Theory.add_modesyntax mode o map Comment.ignore;
-fun add_modesyntax_i mode = Theory.add_modesyntax_i mode o map Comment.ignore;
-val add_trrules = Theory.add_trrules o map Comment.ignore;
-val add_trrules_i = Theory.add_trrules_i o map Comment.ignore;
-val add_judgment = ObjectLogic.add_judgment o Comment.ignore;
-val add_judgment_i = ObjectLogic.add_judgment_i o Comment.ignore;
-
-
 (* axioms and defs *)
 
 fun add_axms f args thy =
   f (map (fn (x, srcs) => (x, map (Attrib.global_attribute thy) srcs)) args) thy;
 
-val add_axioms = add_axms (#1 oo PureThy.add_axioms) o map Comment.ignore;
-val add_axioms_i = (#1 oo PureThy.add_axioms_i) o map Comment.ignore;
-fun add_defs (x, args) = add_axms (#1 oo PureThy.add_defs x) (map Comment.ignore args);
-fun add_defs_i (x, args) = (#1 oo PureThy.add_defs_i x) (map Comment.ignore args);
+val add_axioms = add_axms (#1 oo PureThy.add_axioms);
+val add_axioms_i = #1 oo PureThy.add_axioms_i;
+fun add_defs (x, args) = add_axms (#1 oo PureThy.add_defs x) args;
+fun add_defs_i (x, args) = (#1 oo PureThy.add_defs_i x) args;
 
 
 (* constdefs *)
 
 fun gen_add_constdefs consts defs args thy =
   thy
-  |> consts (map (Comment.ignore o fst) args)
-  |> defs (false, map (fn (((c, _, mx), _), (s, _)) =>
-    (((Thm.def_name (Syntax.const_name c mx), s), []), Comment.none)) args);
+  |> consts (map fst args)
+  |> defs (false, map (fn ((c, _, mx), s) =>
+    ((Thm.def_name (Syntax.const_name c mx), s), [])) args);
 
-fun add_constdefs args = gen_add_constdefs Theory.add_consts add_defs args;
-fun add_constdefs_i args = gen_add_constdefs Theory.add_consts_i add_defs_i args;
+val add_constdefs = gen_add_constdefs Theory.add_consts add_defs;
+val add_constdefs_i = gen_add_constdefs Theory.add_consts_i add_defs_i;
 
 
 (* attributes *)
@@ -355,30 +275,27 @@
 
 in
 
-fun theorems_i k = (present_thmss k oo PureThy.have_thmss_i (Drule.kind k)) o map Comment.ignore;
-fun locale_theorems_i k loc = (present_thmss k oo Locale.have_thmss_i k loc) o map Comment.ignore;
+fun theorems_i k = present_thmss k oo PureThy.have_thmss_i (Drule.kind k);
+fun locale_theorems_i k loc = present_thmss k oo Locale.have_thmss_i k loc;
 
 fun theorems k args thy = thy
-  |> PureThy.have_thmss (Drule.kind k) (global_attribs thy (map Comment.ignore args))
+  |> PureThy.have_thmss (Drule.kind k) (global_attribs thy args)
   |> present_thmss k;
 
 fun locale_theorems k loc args thy = thy
-  |> Locale.have_thmss k loc (local_attribs thy (map Comment.ignore args))
+  |> Locale.have_thmss k loc (local_attribs thy args)
   |> present_thmss k;
 
 fun smart_theorems k opt_loc args thy = thy
   |> (case opt_loc of
-    None => PureThy.have_thmss (Drule.kind k) (global_attribs thy (map Comment.ignore args))
-  | Some loc => Locale.have_thmss k loc (local_attribs thy (map Comment.ignore args)))
+    None => PureThy.have_thmss (Drule.kind k) (global_attribs thy args)
+  | Some loc => Locale.have_thmss k loc (local_attribs thy args))
   |> present_thmss k;
 
-fun declare_theorems opt_loc (args, comment) =
-  #1 o smart_theorems "" opt_loc [((("", []), args), comment)];
+fun declare_theorems opt_loc args = #1 o smart_theorems "" opt_loc [(("", []), args)];
 
-fun apply_theorems args =
-  apsnd (flat o map snd) o theorems "" [((("", []), args), Comment.none)];
-fun apply_theorems_i args =
-  apsnd (flat o map snd) o theorems_i "" [((("", []), args), Comment.none)];
+fun apply_theorems args = apsnd (flat o map snd) o theorems "" [(("", []), args)];
+fun apply_theorems_i args = apsnd (flat o map snd) o theorems_i "" [(("", []), args)];
 
 end;
 
@@ -391,25 +308,25 @@
 
 fun chain_thmss f args = ProofHistory.apply (Proof.chain o f (map (pair ("", [])) args));
 
-val have_facts = ProofHistory.apply o local_thmss Proof.have_thmss o map Comment.ignore;
-val have_facts_i = ProofHistory.apply o local_thmss_i Proof.have_thmss_i o map Comment.ignore;
-val from_facts = chain_thmss (local_thmss Proof.have_thmss) o map Comment.ignore;
-val from_facts_i = chain_thmss (local_thmss_i Proof.have_thmss_i) o map Comment.ignore;
-val with_facts = chain_thmss (local_thmss Proof.with_thmss) o map Comment.ignore;
-val with_facts_i = chain_thmss (local_thmss_i Proof.with_thmss_i) o map Comment.ignore;
-fun chain comment_ignore = ProofHistory.apply Proof.chain;
+val have_facts = ProofHistory.apply o local_thmss Proof.have_thmss;
+val have_facts_i = ProofHistory.apply o local_thmss_i Proof.have_thmss_i;
+val from_facts = chain_thmss (local_thmss Proof.have_thmss);
+val from_facts_i = chain_thmss (local_thmss_i Proof.have_thmss_i);
+val with_facts = chain_thmss (local_thmss Proof.with_thmss);
+val with_facts_i = chain_thmss (local_thmss_i Proof.with_thmss_i);
+val chain = ProofHistory.apply Proof.chain;
 
 
 (* context *)
 
-val fix = ProofHistory.apply o Proof.fix o map Comment.ignore;
-val fix_i = ProofHistory.apply o Proof.fix_i o map Comment.ignore;
-val let_bind = ProofHistory.apply o Proof.let_bind o map Comment.ignore;
-val let_bind_i = ProofHistory.apply o Proof.let_bind_i o map Comment.ignore;
+val fix = ProofHistory.apply o Proof.fix;
+val fix_i = ProofHistory.apply o Proof.fix_i;
+val let_bind = ProofHistory.apply o Proof.let_bind;
+val let_bind_i = ProofHistory.apply o Proof.let_bind_i;
 
-fun invoke_case ((name, xs, src), comment_ignore) = ProofHistory.apply (fn state =>
+fun invoke_case (name, xs, src) = ProofHistory.apply (fn state =>
   Proof.invoke_case (name, xs, map (Attrib.local_attribute (Proof.theory_of state)) src) state);
-val invoke_case_i = ProofHistory.apply o Proof.invoke_case o Comment.ignore;
+val invoke_case_i = ProofHistory.apply o Proof.invoke_case;
 
 
 (* local results *)
@@ -487,94 +404,80 @@
 
 fun multi_theorem k a elems args int thy =
   global_statement (Proof.multi_theorem k (apsnd (map (Attrib.global_attribute thy)) a) None
-    (map (Locale.attribute (Attrib.local_attribute thy)) elems)) (map Comment.ignore args) int thy;
+    (map (Locale.attribute (Attrib.local_attribute thy)) elems)) args int thy;
 
-fun multi_theorem_i k a elems =
-  global_statement_i (Proof.multi_theorem_i k a None elems) o map Comment.ignore;
+fun multi_theorem_i k a elems = global_statement_i (Proof.multi_theorem_i k a None elems);
 
 fun locale_multi_theorem k a locale elems args int thy =
   global_statement (Proof.multi_theorem k (apsnd (map (Attrib.global_attribute thy)) a)
-      (Some (locale, map (map (Attrib.local_attribute thy) o snd o fst o Comment.ignore) args))
+      (Some (locale, map (map (Attrib.local_attribute thy) o snd o fst) args))
       (map (Locale.attribute (Attrib.local_attribute thy)) elems))
-    (map (apfst (apsnd (K [])) o Comment.ignore) args) int thy;
+    (map (apfst (apsnd (K []))) args) int thy;
 
 fun locale_multi_theorem_i k a locale elems args =
-  global_statement_i (Proof.multi_theorem_i k a
-      (Some (locale, map (snd o fst o Comment.ignore) args)) elems)
-    (map (apfst (apsnd (K [])) o Comment.ignore) args);
+  global_statement_i (Proof.multi_theorem_i k a (Some (locale, map (snd o fst) args)) elems)
+    (map (apfst (apsnd (K []))) args);
 
-fun theorem k ((a, t), cmt) = multi_theorem k a [] [((("", []), [t]), cmt)];
-fun theorem_i k ((a, t), cmt) = multi_theorem_i k a [] [((("", []), [t]), cmt)];
+fun theorem k (a, t) = multi_theorem k a [] [(("", []), [t])];
+fun theorem_i k (a, t) = multi_theorem_i k a [] [(("", []), [t])];
 
 fun smart_multi_theorem k a (None, elems) = multi_theorem k a elems
   | smart_multi_theorem k a (Some locale, elems) = locale_multi_theorem k a locale elems;
 
-val assume      = local_statement Proof.assume I o map Comment.ignore;
-val assume_i    = local_statement_i Proof.assume_i I o map Comment.ignore;
-val presume     = local_statement Proof.presume I o map Comment.ignore;
-val presume_i   = local_statement_i Proof.presume_i I o map Comment.ignore;
-val have        = local_statement (Proof.have Seq.single) I o map Comment.ignore;
-val have_i      = local_statement_i (Proof.have_i Seq.single) I o map Comment.ignore;
-val hence       = local_statement (Proof.have Seq.single) Proof.chain o map Comment.ignore;
-val hence_i     = local_statement_i (Proof.have_i Seq.single) Proof.chain o map Comment.ignore;
-val show        = local_statement' (Proof.show check_goal Seq.single) I o map Comment.ignore;
-val show_i      = local_statement_i' (Proof.show_i check_goal Seq.single) I o map Comment.ignore;
-val thus = local_statement' (Proof.show check_goal Seq.single) Proof.chain o map Comment.ignore;
-val thus_i = local_statement_i' (Proof.show_i check_goal Seq.single) Proof.chain o map Comment.ignore;
+val assume      = local_statement Proof.assume I;
+val assume_i    = local_statement_i Proof.assume_i I;
+val presume     = local_statement Proof.presume I;
+val presume_i   = local_statement_i Proof.presume_i I;
+val have        = local_statement (Proof.have Seq.single) I;
+val have_i      = local_statement_i (Proof.have_i Seq.single) I;
+val hence       = local_statement (Proof.have Seq.single) Proof.chain;
+val hence_i     = local_statement_i (Proof.have_i Seq.single) Proof.chain;
+val show        = local_statement' (Proof.show check_goal Seq.single) I;
+val show_i      = local_statement_i' (Proof.show_i check_goal Seq.single) I;
+val thus        = local_statement' (Proof.show check_goal Seq.single) Proof.chain;
+val thus_i      = local_statement_i' (Proof.show_i check_goal Seq.single) Proof.chain;
 
 fun gen_def f ((name, srcs), def) = ProofHistory.apply (fn state =>
   f name (map (Attrib.local_attribute (Proof.theory_of state)) srcs) def state);
 
-val local_def = gen_def Proof.def o Comment.ignore;
-val local_def_i = gen_def Proof.def_i o Comment.ignore;
+val local_def = gen_def Proof.def;
+val local_def_i = gen_def Proof.def_i;
 
 fun obtain (xs, asms) = ProofHistory.applys (fn state =>
-  Obtain.obtain (map Comment.ignore xs)
-    (map (local_attributes' state) (map Comment.ignore asms)) state);
+  Obtain.obtain xs (map (local_attributes' state) asms) state);
 
-fun obtain_i (xs, asms) = ProofHistory.applys (fn state =>
-  Obtain.obtain_i (map Comment.ignore xs) (map Comment.ignore asms) state);
+fun obtain_i (xs, asms) = ProofHistory.applys (Obtain.obtain_i xs asms);
 
 end;
 
 
 (* blocks *)
 
-fun begin_block comment_ignore = ProofHistory.apply Proof.begin_block;
-fun next_block comment_ignore = ProofHistory.apply Proof.next_block;
-fun end_block comment_ignore = ProofHistory.applys Proof.end_block;
+val begin_block = ProofHistory.apply Proof.begin_block;
+val next_block = ProofHistory.apply Proof.next_block;
+val end_block = ProofHistory.applys Proof.end_block;
 
 
 (* shuffle state *)
 
 fun shuffle meth i = Method.refine (Method.Basic (K (meth i))) o Proof.assert_no_chain;
 
-fun defer (i, comment_ignore) = ProofHistory.applys (shuffle Method.defer i);
-fun prefer (i, comment_ignore) = ProofHistory.applys (shuffle Method.prefer i);
+fun defer i = ProofHistory.applys (shuffle Method.defer i);
+fun prefer i = ProofHistory.applys (shuffle Method.prefer i);
 
 
 (* backward steps *)
 
-fun apply (m, comment_ignore) = ProofHistory.applys
+fun apply m = ProofHistory.applys
   (Seq.map (Proof.goal_facts (K [])) o Method.refine m o Proof.assert_backward);
-
-fun apply_end (m, comment_ignore) = ProofHistory.applys
-  (Method.refine_end m o Proof.assert_forward);
-
-val proof = ProofHistory.applys o Method.proof o
-  apsome Comment.ignore_interest o Comment.ignore_interest' o Comment.ignore;
+fun apply_end m = ProofHistory.applys (Method.refine_end m o Proof.assert_forward);
+val proof = ProofHistory.applys o Method.proof;
 
 
 (* local endings *)
 
-val local_qed =
-  proof'' o (ProofHistory.applys oo Method.local_qed true) o apsome Comment.ignore_interest;
-
-fun ignore_interests (x, y) = (Comment.ignore_interest x, apsome Comment.ignore_interest y);
-
-val local_terminal_proof =
-  proof'' o (ProofHistory.applys oo Method.local_terminal_proof) o ignore_interests;
-
+val local_qed = proof'' o (ProofHistory.applys oo Method.local_qed true);
+val local_terminal_proof = proof'' o (ProofHistory.applys oo Method.local_terminal_proof);
 val local_default_proof = proof'' (ProofHistory.applys o Method.local_default_proof);
 val local_immediate_proof = proof'' (ProofHistory.applys o Method.local_immediate_proof);
 val local_done_proof = proof'' (ProofHistory.applys o Method.local_done_proof);
@@ -596,9 +499,8 @@
     thy
   end);
 
-fun global_qed m = global_result (K (Method.global_qed true (apsome Comment.ignore_interest m)));
-fun global_terminal_proof m =
-  global_result (K (Method.global_terminal_proof (ignore_interests m)));
+fun global_qed m = global_result (K (Method.global_qed true m));
+fun global_terminal_proof m = global_result (K (Method.global_terminal_proof m));
 val global_default_proof = global_result (K Method.global_default_proof);
 val global_immediate_proof = global_result (K Method.global_immediate_proof);
 val global_skip_proof = global_result SkipProof.global_skip_proof;
@@ -607,14 +509,13 @@
 
 (* common endings *)
 
-fun qed (meth, comment) = local_qed meth o global_qed meth;
-fun terminal_proof (meths, comment) = local_terminal_proof meths o global_terminal_proof meths;
-fun default_proof comment = local_default_proof o global_default_proof;
-fun immediate_proof comment = local_immediate_proof o global_immediate_proof;
-fun done_proof comment = local_done_proof o global_done_proof;
-fun skip_proof comment = local_skip_proof o global_skip_proof;
-
-fun forget_proof comment = Toplevel.proof_to_theory (Proof.theory_of o ProofHistory.current);
+fun qed meth = local_qed meth o global_qed meth;
+fun terminal_proof meths = local_terminal_proof meths o global_terminal_proof meths;
+val default_proof = local_default_proof o global_default_proof;
+val immediate_proof = local_immediate_proof o global_immediate_proof;
+val done_proof = local_done_proof o global_done_proof;
+val skip_proof = local_skip_proof o global_skip_proof;
+val forget_proof = Toplevel.proof_to_theory (Proof.theory_of o ProofHistory.current);
 
 
 (* calculational proof commands *)
@@ -628,8 +529,8 @@
 
 fun proof''' f = Toplevel.proof' (f o cond_print_calc);
 
-fun gen_calc get f (args, _) prt state =
-  f (apsome (fn (srcs, _) => get srcs state) args) prt state;
+fun gen_calc get f args prt state =
+  f (apsome (fn srcs => get srcs state) args) prt state;
 
 in
 
@@ -640,8 +541,8 @@
 fun also_i x = proof''' (ProofHistory.applys o gen_calc get_thmss_i Calculation.also x);
 fun finally x = proof''' (ProofHistory.applys o gen_calc get_thmss Calculation.finally x);
 fun finally_i x = proof''' (ProofHistory.applys o gen_calc get_thmss_i Calculation.finally x);
-fun moreover comment = proof''' (ProofHistory.apply o Calculation.moreover);
-fun ultimately comment = proof''' (ProofHistory.apply o Calculation.ultimately);
+val moreover = proof''' (ProofHistory.apply o Calculation.moreover);
+val ultimately = proof''' (ProofHistory.apply o Calculation.ultimately);
 
 end;
 
@@ -650,32 +551,32 @@
 
 val parse_ast_translation =
   Context.use_let "val parse_ast_translation: (string * (Syntax.ast list -> Syntax.ast)) list"
-    "Theory.add_trfuns (parse_ast_translation, [], [], [])" o Comment.ignore;
+    "Theory.add_trfuns (parse_ast_translation, [], [], [])";
 
 val parse_translation =
   Context.use_let "val parse_translation: (string * (term list -> term)) list"
-    "Theory.add_trfuns ([], parse_translation, [], [])" o Comment.ignore;
+    "Theory.add_trfuns ([], parse_translation, [], [])";
 
 val print_translation =
   Context.use_let "val print_translation: (string * (term list -> term)) list"
-    "Theory.add_trfuns ([], [], print_translation, [])" o Comment.ignore;
+    "Theory.add_trfuns ([], [], print_translation, [])";
 
 val print_ast_translation =
   Context.use_let "val print_ast_translation: (string * (Syntax.ast list -> Syntax.ast)) list"
-    "Theory.add_trfuns ([], [], [], print_ast_translation)" o Comment.ignore;
+    "Theory.add_trfuns ([], [], [], print_ast_translation)";
 
 val typed_print_translation =
   Context.use_let "val typed_print_translation: (string * (bool -> typ -> term list -> term)) list"
-    "Theory.add_trfunsT typed_print_translation" o Comment.ignore;
+    "Theory.add_trfunsT typed_print_translation";
 
 val token_translation =
   Context.use_let "val token_translation: (string * string * (string -> string * real)) list"
-    "Theory.add_tokentrfuns token_translation" o Comment.ignore;
+    "Theory.add_tokentrfuns token_translation";
 
 
 (* add method *)
 
-fun method_setup ((name, txt, cmt), comment_ignore) =
+fun method_setup (name, txt, cmt) =
   Context.use_let
     "val thm = PureThy.get_thm_closure (Context.the_context ());\n\
     \val thms = PureThy.get_thms_closure (Context.the_context ());\n\
@@ -686,7 +587,7 @@
 
 (* add_oracle *)
 
-fun add_oracle ((name, txt), comment_ignore) =
+fun add_oracle (name, txt) =
   Context.use_let
     "val oracle: bstring * (Sign.sg * Object.T -> term)"
     "Theory.add_oracle oracle"
@@ -696,8 +597,7 @@
 (* add_locale *)
 
 fun add_locale (name, import, body) thy =
-  Locale.add_locale name import
-    (map (Locale.attribute (Attrib.local_attribute thy) o Comment.ignore) body) thy;
+  Locale.add_locale name import (map (Locale.attribute (Attrib.local_attribute thy)) body) thy;
 
 
 (* theory init and exit *)
--- a/src/Pure/Isar/outer_parse.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/Pure/Isar/outer_parse.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -45,9 +45,6 @@
   val xname: token list -> xstring * token list
   val text: token list -> string * token list
   val uname: token list -> string option * token list
-  val comment: token list -> Comment.text * token list
-  val marg_comment: token list -> Comment.text * token list
-  val interest: token list -> Comment.interest * token list
   val sort: token list -> string * token list
   val arity: token list -> (string list * string) * token list
   val simple_arity: token list -> (string list * xclass) * token list
@@ -177,15 +174,6 @@
 val uname = underscore >> K None || name >> Some;
 
 
-(* formal comments *)
-
-val comment = text >> (Comment.plain o Library.single);
-val marg_comment = Scan.repeat ($$$ "--" |-- text) >> Comment.plain;
-
-val interest = Scan.optional ($$$ "%%" >> K Comment.no_interest ||
-  $$$ "%" |-- Scan.optional nat 1 >> Comment.interest) Comment.default_interest;
-
-
 (* sorts and arities *)
 
 val sort = group "sort" xname;
--- a/src/Pure/Isar/outer_syntax.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/Pure/Isar/outer_syntax.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -228,20 +228,19 @@
 
 (* basic sources *)
 
-fun token_source (src, pos) =
-  src
-  |> Symbol.source false
-  |> T.source false (K (get_lexicons ())) pos;
-
 fun toplevel_source term do_recover cmd src =
   let
     val no_terminator =
       Scan.unless P.semicolon (Scan.one (T.not_sync andf T.not_eof));
-    val recover = Scan.prompt "recover# " (Scan.repeat no_terminator) >> K [None];
+    fun recover x = (Scan.prompt "recover# " (Scan.repeat no_terminator) >> K [None]) x;
   in
     src
+    |> T.source_proper
     |> Source.source T.stopper
-      (Scan.bulk (fn xs => P.!!! (command term (cmd ())) xs))
+      (Scan.bulk (P.$$$ "--" -- P.!!! P.text >> K None || P.not_eof >> Some))
+      (if do_recover then Some recover else None)
+    |> Source.mapfilter I
+    |> Source.source T.stopper (Scan.bulk (fn xs => P.!!! (command term (cmd ())) xs))
       (if do_recover then Some recover else None)
     |> Source.mapfilter I
   end;
@@ -254,7 +253,6 @@
   |> Symbol.source true
   |> T.source true get_lexicons
     (if no_pos then Position.none else Position.line_name 1 "stdin")
-  |> T.source_proper
   |> toplevel_source term true get_parser;
 
 
@@ -294,7 +292,6 @@
 
 fun parse_thy src =
   src
-  |> T.source_proper
   |> toplevel_source false false (K (get_parser ()))
   |> Source.exhaust;
 
@@ -311,7 +308,10 @@
       Present.old_symbol_source name present_text)   (*note: text presented twice*)
     else
       let
-        val tok_src = Source.exhausted (token_source (text_src, pos));
+        val tok_src = text_src
+          |> Symbol.source false
+          |> T.source false (K (get_lexicons ())) pos
+          |> Source.exhausted;
         val out = Toplevel.excursion_result
           (IsarOutput.parse_thy markup (#1 (get_lexicons ()))
             (parse_thy tok_src) tok_src);
--- a/src/Pure/axclass.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/Pure/axclass.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -26,12 +26,10 @@
   val add_inst_arity_i: string * sort list * sort -> tactic -> theory -> theory
   val default_intro_classes_tac: thm list -> int -> tactic
   val axclass_tac: thm list -> tactic
-  val instance_subclass_proof: (xclass * xclass) * Comment.text -> bool -> theory -> ProofHistory.T
-  val instance_subclass_proof_i: (class * class) * Comment.text -> bool -> theory -> ProofHistory.T
-  val instance_arity_proof: (xstring * string list * xclass) * Comment.text
-    -> bool -> theory -> ProofHistory.T
-  val instance_arity_proof_i: (string * sort list * class) * Comment.text
-    -> bool -> theory -> ProofHistory.T
+  val instance_subclass_proof: xclass * xclass -> bool -> theory -> ProofHistory.T
+  val instance_subclass_proof_i: class * class -> bool -> theory -> ProofHistory.T
+  val instance_arity_proof: xstring * string list * xclass -> bool -> theory -> ProofHistory.T
+  val instance_arity_proof_i: string * sort list * class -> bool -> theory -> ProofHistory.T
   val setup: (theory -> theory) list
 end;
 
@@ -421,10 +419,10 @@
 
 fun inst_attribute add_thms (thy, thm) = (add_thms [thm] thy, thm);
 
-fun inst_proof mk_prop add_thms (sig_prop, comment) int thy =
+fun inst_proof mk_prop add_thms sig_prop int thy =
   thy
-  |> IsarThy.theorem_i Drule.internalK ((("", [inst_attribute add_thms]),
-    (mk_prop (Theory.sign_of thy) sig_prop, ([], []))), comment) int;
+  |> IsarThy.theorem_i Drule.internalK (("", [inst_attribute add_thms]),
+    (mk_prop (Theory.sign_of thy) sig_prop, ([], []))) int;
 
 val instance_subclass_proof = inst_proof (mk_classrel oo read_classrel) add_classrel_thms;
 val instance_subclass_proof_i = inst_proof (mk_classrel oo cert_classrel) add_classrel_thms;
@@ -448,17 +446,14 @@
 
 val axclassP =
   OuterSyntax.command "axclass" "define axiomatic type class" K.thy_decl
-    (((P.name -- Scan.optional ((P.$$$ "\\<subseteq>" || P.$$$ "<") |--
-        P.!!! (P.list1 P.xname)) []) --| P.marg_comment)
-      -- Scan.repeat (P.spec_name --| P.marg_comment)
+    ((P.name -- Scan.optional ((P.$$$ "\\<subseteq>" || P.$$$ "<") |--
+        P.!!! (P.list1 P.xname)) []) -- Scan.repeat P.spec_name
       >> (fn (cls, axs) => Toplevel.theory (#1 o add_axclass cls axs)));
 
 val instanceP =
   OuterSyntax.command "instance" "prove type arity or subclass relation" K.thy_goal
-    ((P.xname -- ((P.$$$ "\\<subseteq>" || P.$$$ "<") |-- P.xname)
-        -- P.marg_comment >> instance_subclass_proof ||
-      (P.xname -- (P.$$$ "::" |-- P.simple_arity) >> P.triple2) -- P.marg_comment
-        >> instance_arity_proof)
+    ((P.xname -- ((P.$$$ "\\<subseteq>" || P.$$$ "<") |-- P.xname) >> instance_subclass_proof ||
+      (P.xname -- (P.$$$ "::" |-- P.simple_arity) >> P.triple2) >> instance_arity_proof)
       >> (Toplevel.print oo Toplevel.theory_to_proof));
 
 val _ = OuterSyntax.add_parsers [axclassP, instanceP];
--- a/src/ZF/Tools/datatype_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/ZF/Tools/datatype_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -419,14 +419,14 @@
 
 val con_decl =
   P.name -- Scan.optional (P.$$$ "(" |-- P.list1 P.term --| P.$$$ ")") [] -- P.opt_mixfix
-  --| P.marg_comment >> P.triple1;
+  >> P.triple1;
 
 val datatype_decl =
-  (Scan.optional ((P.$$$ "\\<subseteq>" || P.$$$ "<=") |-- P.!!! P.term --| P.marg_comment) "") --
+  (Scan.optional ((P.$$$ "\\<subseteq>" || P.$$$ "<=") |-- P.!!! P.term) "") --
   P.and_list1 (P.term -- (P.$$$ "=" |-- P.enum1 "|" con_decl)) --
-  Scan.optional (P.$$$ "monos" |-- P.!!! P.xthms1 --| P.marg_comment) [] --
-  Scan.optional (P.$$$ "type_intros" |-- P.!!! P.xthms1 --| P.marg_comment) [] --
-  Scan.optional (P.$$$ "type_elims" |-- P.!!! P.xthms1 --| P.marg_comment) []
+  Scan.optional (P.$$$ "monos" |-- P.!!! P.xthms1) [] --
+  Scan.optional (P.$$$ "type_intros" |-- P.!!! P.xthms1) [] --
+  Scan.optional (P.$$$ "type_elims" |-- P.!!! P.xthms1) []
   >> (Toplevel.theory o mk_datatype);
 
 val coind_prefix = if coind then "co" else "";
--- a/src/ZF/Tools/ind_cases.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/ZF/Tools/ind_cases.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -55,8 +55,8 @@
     val read_prop = ProofContext.read_prop (ProofContext.init thy);
     val mk_cases = smart_cases thy (Simplifier.simpset_of thy) read_prop;
     val facts = args |> map (fn ((name, srcs), props) =>
-      (((name, map (Attrib.global_attribute thy) srcs),
-        map (Thm.no_attributes o single o mk_cases) props), Comment.none));
+      ((name, map (Attrib.global_attribute thy) srcs),
+        map (Thm.no_attributes o single o mk_cases) props));
   in thy |> IsarThy.theorems_i Drule.lemmaK facts |> #1 end;
 
 
@@ -84,7 +84,7 @@
 local structure P = OuterParse and K = OuterSyntax.Keyword in
 
 val ind_cases =
-  P.and_list1 (P.opt_thm_name ":" -- Scan.repeat1 P.prop --| P.marg_comment)
+  P.and_list1 (P.opt_thm_name ":" -- Scan.repeat1 P.prop)
   >> (Toplevel.theory o inductive_cases);
 
 val inductive_casesP =
--- a/src/ZF/Tools/inductive_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/ZF/Tools/inductive_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -605,13 +605,13 @@
 
 val ind_decl =
   (P.$$$ "domains" |-- P.!!! (P.enum1 "+" P.term --
-      ((P.$$$ "\\<subseteq>" || P.$$$ "<=") |-- P.term)) --| P.marg_comment) --
+      ((P.$$$ "\\<subseteq>" || P.$$$ "<=") |-- P.term))) --
   (P.$$$ "intros" |--
-    P.!!! (Scan.repeat1 (P.opt_thm_name ":" -- P.prop --| P.marg_comment))) --
-  Scan.optional (P.$$$ "monos" |-- P.!!! P.xthms1 --| P.marg_comment) [] --
-  Scan.optional (P.$$$ "con_defs" |-- P.!!! P.xthms1 --| P.marg_comment) [] --
-  Scan.optional (P.$$$ "type_intros" |-- P.!!! P.xthms1 --| P.marg_comment) [] --
-  Scan.optional (P.$$$ "type_elims" |-- P.!!! P.xthms1 --| P.marg_comment) []
+    P.!!! (Scan.repeat1 (P.opt_thm_name ":" -- P.prop))) --
+  Scan.optional (P.$$$ "monos" |-- P.!!! P.xthms1) [] --
+  Scan.optional (P.$$$ "con_defs" |-- P.!!! P.xthms1) [] --
+  Scan.optional (P.$$$ "type_intros" |-- P.!!! P.xthms1) [] --
+  Scan.optional (P.$$$ "type_elims" |-- P.!!! P.xthms1) []
   >> (Toplevel.theory o mk_ind);
 
 val inductiveP = OuterSyntax.command (co_prefix ^ "inductive")
--- a/src/ZF/Tools/primrec_package.ML	Tue Feb 12 20:25:58 2002 +0100
+++ b/src/ZF/Tools/primrec_package.ML	Tue Feb 12 20:28:27 2002 +0100
@@ -202,7 +202,7 @@
 
 local structure P = OuterParse and K = OuterSyntax.Keyword in
 
-val primrec_decl = Scan.repeat1 (P.opt_thm_name ":" -- P.prop --| P.marg_comment);
+val primrec_decl = Scan.repeat1 (P.opt_thm_name ":" -- P.prop);
 
 val primrecP =
   OuterSyntax.command "primrec" "define primitive recursive functions on datatypes" K.thy_decl