| void upright (uplab) | LABSET.C | Level 1 |
| int uplab | = 1 to turn on upright y axis labels.
= 0 to turn off upright y axis labels (default). |
| When upright(1) is called, a flag is set that causes the y axis labels to be plotted horizontally. This mode will stay in effect until upright(0) is called. |