Does IBM offer a PL/I compiler for Windows?
No, IBM no longer offers a PL/I compiler for Windows.
How to refer to assembler DS PL3 in a PL/I program?
PL3 is packed decimal, length 3 (bytes). That would correspond to fixed decimal(5), as a nibble of the 3 bytes is for the sign, and the remaining 5 nibbles for digits.
How do I stop the PL/I compiler from being invoked with IBM File Manager?
IBM File Manager contains a version of the PL/I compiler which is automatically invoked. There is a PTF available to fix the issue:
How can I submit a PL/I Case (former PMR) to the IBM support team?
You can submit a PL/I Case at the link below.
Can I link C and PL/I modules?
Yes, PL/I can call C/C++ routines. Learn more.