User`s manual

7–68 Digital Emulation
Set Lines Per Physical Page (DECSLPP)
ASCII Code ESC [ Pn t
Hex Code 1B 5B Pn 74
Dec Code 27 91 Pn 116
Purpose Defines form length.
Discussion A form’s length equals the maximum distance the paper moves when a
form feed command is issued. Maximum form length is 33 inches.
DECSLPP sets the top margin to 1 and the bottom margin to the form length.
Form length limits the range of possible settings for the Set Top and Bottom
Margins (DECSTBM) sequence.
Pn sets the form length, subject to the limits discussed above. If Pn is 0 or is
greater than the maximum size for the paper and origin, the form length will
automatically be set to the maximum for the paper and origin. Units of
measurement are character cells, decipoints, or pixels. Select the unit by
using the Position Unit Mode (PUM) and Select Size Unit (SSU) sequences.
If you use character cells, the height of each cell equals the current line
height setting. You can change line height by changing the vertical spacing.
Initial value: Pn = 0. If a Pn value is not set, the form length is set to 66
lines.
Other control sequences are specified in “Forms,” page 7–48.