CempMemPoolIndexOrNone
This textual convention is an extension of the CempMemPoolIndex. The latter defines a value greater than zero to identify a memory pool in a particular physical entity. This extension permits the additional value of zero. The value zero is object-specific and must therefore be defined as part of the description of any object which uses this syntax. Examples of the usage of zero might include situations where memory pool was unknown, or when none or all memory pools need to be referenced.