use of etags and TAGS files for languages not supported by etags.
The Emacs manual section on Tags contains explanations and examples
-for Emacs's DEFVAR, VHDL, Cobol, Postscript and TCL.
+for Emacs's DEFVAR, VHDL, Cobol, PostScript and TCL.
** Various mode-specific commands that used to be bound to C-c LETTER
have been moved.