When to Specify COPY=NO
Specifying COPY=NO may reduce the number of operations CMS performs
if your AMODE 31 bit program frequently calls AMODE 24 programs. Here
are two examples of when your program might want to specify COPY=NO:
- Your program allocates storage from below the 16MB line and stores the parameter lists there itself.
- Your program has no parameters to pass (you may just pass information in registers, or with a return code, or using the UFLAGS parameter).