RULE

        [GREG1\]RULE [X] [Y] [/MAJOR] [/MINOR]

    Without  an  argument, or with both X and Y arguments, RULE makes a grid
    within the BOX using the current pen. Major or minor ticks or  both  are
    selected  according  to the options.  With the argument X or Y, the grid
    is restricted to X or Y ticks respectively.  The /MAJOR and  /MINOR  op-
    tions can be combined in the same command.