For each call frame, the SHOW STACK command displays information
    such as stack pointers, condition handler, saved register values
    (Alpha), local register allocation (Integrity servers). Note that
    an argument passed through a register or an argument list may
    contain the addresses of the actual argument. In such cases, use
    the EXAMINE address-expression command to display the values of
    these arguments.

    On Alpha and Integrity server processors, a routine invocation
    can result in:

    o  A stack frame procedure, with a call frame on the memory
       stack,

    o  A register frame procedure, with a call frame stored in the
       register set (Alpha) or on the register stack (Integrity
       servers), or

    o  A null frame procedure, without a call frame

    The SHOW STACK command provides information on all three
    procedures: stack frame, register frame, and null frame. (See
    the examples below.)

    Related command:

       SHOW CALLS