-the syntax of C, Objective C, C++, Java, Fortran, Ada, Cobol, Erlang, HTML,
-LaTeX, Emacs Lisp/Common Lisp, Lua, makefile, Pascal, Perl, PHP, Postscript,
-Python, Prolog, Scheme and
+the syntax of C, Objective C, C++, Java, Fortran, Ada, Cobol, Erlang,
+Forth, HTML, LaTeX, Emacs Lisp/Common Lisp, Lua, Makefile, Pascal, Perl,
+PHP, PostScript, Python, Prolog, Scheme and