PS TEXT FORMAT Reference Manual

TFORMCVT: Converting From TGAL to TFORM
E-24 11387 Tandem Computers Incorporated
Tips
TGAL has 10 variables, called “toggles,” numbered 1 through 10;
TFORMCVT provides the corresponding variables TGAL_1 through
TGAL_10. In TGAL, any IF command terminates the previous IF
command. Since an IF command must be explicitly turned off in
TFORM, TFORMCVT issues the ENDIF command where appropriate.
Using IF to control other TGAL commands that do not explicity turn
themselves on or off (BLANK, BOX, and TRANSPARENT) is not
recommended since TFORMCVT does not keep a record of a command
that has been turned on or off under the control of an IF command.
In TGAL, an IF command terminates a NEED command. This is not
the case with TFORM. TFORMCVT can’t provide this feature, since
KEEP OFF can turn off only KEEP ON (not KEEP BLANK, and so on).