Planning the IEASYMxx member in parmlib

IEASYMxx does the following for each system:

Defines static system symbols
Specifies the IEASYSxx parmlib members that the system is to use.
Specifies the system name, which is also the substitution text for the &SYSNAME system symbol.

In IEASYMxx, you identify individual systems and, for each system, you can define a unique substitution text for the same system symbols. When the system symbols are specified in shared resource names, each system can substitute unique text for those system symbols.