Enterprise PL/I provides compile-time options to change any of the compiler's default settings. You can specify options on the command line, and they remain in effect for all compilation units in the file, unless %PROCESS statements in your source program override them.
Refer to Compile-time option descriptions for a description of these options.
When you specify options on the command line, they override the default settings of the option. They are overridden by options set in the source file.
You can specify compile-time options on the command line in three ways: