PS TEXT FORMAT Reference Manual

TFORMCVT: Converting From TGAL to TFORM
E-48 11387 Tandem Computers Incorporated
TRANSPARENT Command
\TRANSPARENT
In TGAL the TRANSPARENT command is used both to turn transparency
on and to turn it off. TFORMCVT can tell from the context to which use
the command is being put. When the command is turning transparency
on, the TFORMCVT output is:
\TRANSPARENT ON
When the command is turning transparency off, the TFORMCVT output is:
\TRANSPARENT OFF
Tips
TFORM has no TRANSPARENT command; instead, TFORMCVT
issues a call to a TFORM macro.
A TRANSPARENT command controlled by an IF command is not
recommended, as TFORMCVT doesn’t keep track of the range of a
TRANSPARENT command that has been turned on or off under the
control of an IF command.