| interprets plotting instructions (see |
| drawing the results in a newly created |
| Plot persists until a newline is typed in the window. |
| Various options may be interspersed with the |
| arguments; they take effect at the given point in processing. |
| .TP "\w'\fL-g \fIgrade\fLXX'u" |
| Double buffer: accumulate the plot off-screen and write to the screen all at once |
| when an erase command is encountered or at end of file. |
| Set the foreground color (see |
| Set the background color. |
| Set the quality factor for arcs. |
| Higher grades give better quality. |
| Pause until a newline is typed on standard input. |
| Specify the bounding rectangle of plot's window. |
| By default it uses a 512×512 window in the |