src/Pure/pure_thy.ML

     ("_update_name", typ "idt",                        NoSyn),
     ("_constrainAbs", typ "'a",                        NoSyn),
     ("_constrain_position", typ "id => id_position",   Delimfix "_"),
     ("_constrain_position", typ "longid => longid_position", Delimfix "_"),
     ("_type_constraint_", typ "'a",                    NoSyn),
-    ("_context_const", typ "id => logic",              Delimfix "CONST _"),
-    ("_context_const", typ "id => aprop",              Delimfix "CONST _"),
-    ("_context_const", typ "longid => logic",          Delimfix "CONST _"),
-    ("_context_const", typ "longid => aprop",          Delimfix "CONST _"),
-    ("_context_xconst", typ "id => logic",             Delimfix "XCONST _"),
-    ("_context_xconst", typ "id => aprop",             Delimfix "XCONST _"),
-    ("_context_xconst", typ "longid => logic",         Delimfix "XCONST _"),
-    ("_context_xconst", typ "longid => aprop",         Delimfix "XCONST _"),
+    ("_context_const", typ "id_position => logic",     Delimfix "CONST _"),
+    ("_context_const", typ "id_position => aprop",     Delimfix "CONST _"),
+    ("_context_const", typ "longid_position => logic", Delimfix "CONST _"),
+    ("_context_const", typ "longid_position => aprop", Delimfix "CONST _"),
+    ("_context_xconst", typ "id_position => logic",    Delimfix "XCONST _"),
+    ("_context_xconst", typ "id_position => aprop",    Delimfix "XCONST _"),
+    ("_context_xconst", typ "longid_position => logic", Delimfix "XCONST _"),
+    ("_context_xconst", typ "longid_position => aprop", Delimfix "XCONST _"),
     (const "==>",   typ "prop => prop => prop",        Delimfix "op ==>"),
     (const Term.dummy_patternN, typ "aprop",           Delimfix "'_"),
     ("_sort_constraint", typ "type => prop",           Delimfix "(1SORT'_CONSTRAINT/(1'(_')))"),
     (const "Pure.term", typ "logic => prop",           Delimfix "TERM _"),
     (const "Pure.conjunction", typ "prop => prop => prop", Infixr ("&&&", 2))]