This option specifies that when a DECK file is written for a preprocessor, every non-blank line in that file is preceded by a line containing a %LINE directive. The directive indicates the original source file and line to which the non-blank line should be attributed.
.-NOPPTRACE-. >>-+-PPTRACE---+-----------------------------------------------><
PPTRACE should be used only with preprocessors other than those that are integrated with the PL/I compiler.