The RexxAddMacro return values are:
────────────────────────────────────────────────────────────────────────
0 RXMACRO_OK The call to the function
completed successfully.
──────────────────────────────────────────────────────────────────────
1 RXMACRO_NO_STORAGE There was not enough
memory to complete the
requested function.
──────────────────────────────────────────────────────────────────────
7 RXMACRO_SOURCE_NOT_FOUND The requested file was not
found.
──────────────────────────────────────────────────────────────────────
8 RXMACRO_INVALID_POSITION An invalid search-order
position request flag was
used.
────────────────────────────────────────────────────────────────────────