In IBM's PL/I is there any way to send control characters to screen or
printer? To be specific in C one can use the following #define
YELLOWONBLUE '\1b[33;44m' and the ANSI commands work to make yellow
text on blue background. In the CP/M version of PL/I there was a
similar command %replace which could be used to send commands
(including ESCAPE} to the printer. In BASIC and Modula-2 it is easy to
use the ANSI to make red boxes on blue screens, etc. If such a
capability is in PL/I, I cannot find it, but I find it hard to believe
that IBM made no such provision.
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