!File: - Reference to Another File

    Purpose
    Use the !file: command when you wish to create a short entry that points
    to another list of short entries. The !file: command can also be used
    to access a file with a single long entry.

    Format:
         !file: filename.ngo                                            

    Description
    The !file: commands allows you to point to another file. This
    file can contain a list of short entries or a single long entry.
    The following examples demonstrate how the !file: command is imple-
    mented:

    An example of accessing a list of short entries:

         !short: Top Ten Hits from 1960 - 1989.                         
         !file: top_ten.eho                                             

    An example of accessing a single long entry.

         !short: Line Drawing Chart                                     
         !file: line_drw.eho                                            


    Note:
         You must specify the compiled object file, which will have the
         .EHO extension. The !file: command, like all other bang commands,
         must be typed starting in column 1.