.PL/ILIB
.PL/ILIB is a Strobe pseudo-section that represents activity for PL/I library modules (modules names beginning with IBM, IHE, or IEL) and VisualAge PL/I modules.
Reference Sources
OS PL/I Resident Library: Program Logic, LY33-6008.
Strobe Interpretation and Analysis User Guide, Compuware Corporation.