STATUS

This is a command that opens the "Status" requester, from which you
can see how many GUIs are loaded/open as well as Load, Open, or Unload
GUI files.

From here you can also QUIT. Upon quitting, all xOnClose event commands
are executed for windows which were open, and all xOnQuit event commands
for all loaded files (if any are defined).

Note that the meaning of the GUI file name extensions, are :

  MyFile.gc      - This is GUI Command file (.gc)
  MyFile.g       - This is a GUI help file, i.e. a GUI which is supposed
                   to be loaded and in general operated from another GUI

There is no difference in the structure of the files. The difference is 
in their operation only.

You need not use the above naming conventions if you don't want to.