Refer to the following commands:

HLDUMPDISK option of CM (Change MCP)

DA (Dump Analyzer)

DF (Empty Dumpdisk File)

DPFILES option of DL (Disk Location)

DN (Dump Name)

DUMP (Dump Memory)

??DUMP (Dump Memory)

??MEMDP (Dump Memory)

HLUNIT (Specify Halt/Load Unit)

MDT (Memory Dump Type)

MEMORYCEILING (Set Memory Ceiling)

the following options of OP (Options)