PS TEXT FORMAT Reference Manual

Introduction to TFORM
11387 Tandem Computers Incorporated 3–125
SET PITCH Option
SET PITCH commands control horizontal and vertical spacing of the
output text (the number of characters per inch horizontally or the
number of lines per inch vertically). The different features you can
specify to customize the SET PITCH option are the following
SET PITCH HORIZONTAL int sets the horizontal spacing to int
characters per inch. The choices available are 10, 12, 15, and
PROPORTIONAL; the latter is very close to 12 characters per inch,
but TFORM adjusts the output to allow for the actual width of each
character (“m” is much wider than “i,” for example, so TFORM
adjusts the spacing accordingly). You can omit the keyword
HORIZONTAL if you prefer; TFORM assumes you mean horizontal
pitch if you don’t specify otherwise.
SET PITCH VERTICAL int sets the vertical spacing to int lines per
inch. The minimum acceptable value is 1 and the maximum is 48.
The 5530 printer is capable of vertical spacing in 1/48-inch
increments; the usable values for vertical pitch are 1, 2, 3, 4, 6, 8, 12,
16, 24, and 48. If you specify a different value, TFORM adjusts the
pitch to the nearest one of those listed.
SET PITCH with no options sets both pitches to their defaults, SET
PITCH HORIZONTAL 10 and SET PITCH VERTICAL 6.