The .page length command sets the page length to the number of lines specified. The physical page length, in terms of inches, can be calculated by the .vmi height of each of the printed lines multiplied by 1/48 of an inch. The length (in inches) of each page can vary as the vertical motion index is changed.
.page length number.lines
.pl
| number.lines | Specifies the number of lines the page length will be set. |