| void frame (frameon, ftick) | GRIDOPTS.C | Level 1 |
| int frameon | = 1 to draw a frame around the axis area. The default is 0, off. |
| int ftick | = 0 for no tick marks around the frame
= 1 to add tick marks around the frame. |
| frame() allows you to put a box around the axis area. The x and y axes are replotted at their maximum values. frame() must be called before any calls to axis drawing routines. |