PS TEXT FORMAT Reference Manual

TFORM Messages
B-18 11387 Tandem Computers Incorporated
WARNING - PITCH CANNOT CHANGE FOR THIS PRINTER
Only the 5530 letter-quality printer can change pitch programmatically.
High-speed line printers can’t change (horizontal) pitch at all.
WARNING - SUBSCRIPTS AND SUPERSCRIPTS IGNORED WITH THIS PRINTER
Printers other than the 5530 can’t move the paper forward and backward
from the current line to produce subscripts and superscripts.
WARNING - THE PITCH HAS BEEN ADJUSTED TO MATCH THIS PRINTER
The printer can’t accept the pitch you specified. TFORM adjusts the pitch
to the closest workable pitch to the one you requested. For the Tandem
5530 letter-quality printer, the horizontal pitch must divide evenly into 120
(or be proportional); the vertical pitch must divide evenly into 48.