+Find the best graph parameters. []
+
+* doc/bison.texinfo
+Update informations about ERROR_VERBOSE. []
+Add explainations about skeleton muscles. []
+Add explainations about %skeleton. []
+
+* testsuite.
+** tests/calc.at
+Remove --yyerror-verbose. []
+** tests/torture.at
+Remove --yyerror-verbose. []
+** tests/calc.at
+Test --error-verbose. []
\ No newline at end of file