GNU GLOBAL is a source code tag system that works the same way across
diverse environments.  GNU GLOBAL has following features:

    * support C, C++, Yacc, Java and PHP4.
    * work the same way across diverse environments. Currently, support
      followings:
          o Generic shell command line
          o Bash shell
          o Vi clone editor (nvi, elvis, vim)
          o Emacs editor (emacs, mule, xemacs)
          o Glimmer editor
          o Less viewer
          o Web browser (See UNIX kernel source tour!.)
          o Doxygen documentation system