Defining TEST suboptions in your program
In C, C++ or PL/I, you can define TEST with suboptions
using a #pragma runopts or PLIXOPT string,
then specify TEST with no suboptions at run time. This
causes the suboptions specified in the #pragma runopts or PLIXOPT string
to take effect.
You can change the TEST/NOTEST run-time options
at any time with the SET TEST command.