reorganized lexicon: allow scanning of annotated symbols, tuned representation and interfaces;

advance: single argument (again); added range; tuned;

Symbols with explicit position information.

added General/symbol_pos.ML;

Interpretation command (theory/proof context) no longer simplifies goal.

added lemma

made SML/NJ happy;

Reverted last change, since it caused incompatibilities.

fall back on P.term_group, to avoid problems with inner_syntax markup (due to CodeName.read_const_exprs);

T.end_position_of; tuned;

adapted Antiq;

parse_sort/typ/term/prop: report markup;

sort/typ/term/prop: inner_syntax markup encodes original source position; added typ/term/prop_group (without inner_syntax markup);

removed obsolete range_of (already included in position); added end_position_of; replaced scan_string by scan_quoted (which keeps quotes and includes alt_string as well); misc tuning;

report markup;

Antiq: inner vs. outer position; scan_antiq: use T.scan_quoted;

of_properties: observe Markup.position_properties';

added position_properties'; renamed prop to proposition; added attribute, method;

token: maintain of source, which retains original position information; removed count/counted, advance position via scanned source;

moved OuterLex.count here;

improved recover: also resync on symbol/comment/verbatim delimiters;

advance: operate on symbol list (less overhead);

added token;

fix HOL/ex/LexOrds.thy; add to regression

added report;

removed axiom; added fact, dynamic_fact, prop;

get_fact: report position;

Facts.lookup: return static/dynamic status;