/HOLD
       /NOHOLD (default)

    When the event facility is THREADS, use the
    PTHREAD tset -h thread-number or the PTHREAD tset -n thread-num
    command.

    Controls whether a specified task is put on hold. The /HOLD
    qualifier puts a specified task on hold.

    Putting a task on hold prevents a task from entering the RUNNING
    state. A task put on hold is allowed to make other state
    transitions; in particular, it can change from the SUSPENDED
    to the READY state.

    Putting a task on hold prevents a task from entering the RUNNING
    state. A task put on hold is allowed to make other state
    transitions; in particular, it can change from the SUSPENDED
    to the READY state.

    A task already in the RUNNING state (the active task) can
    continue to execute as long as it remains in the RUNNING state,
    even though it is put on hold. If the task leaves the RUNNING
    state for any reason (including expiration of a time slice, if
    time slicing is enabled), it will not return to the RUNNING state
    until released from the hold condition.

    You can override the hold condition and force a task into the
    RUNNING state with the SET TASK/ACTIVE command even if the task
    is on hold.

    The /NOHOLD qualifier releases a specified task from hold.

    You can get help on POSIX threads debugger commands by typing
    PTHREAD HELP.

    See the Guide to the POSIX Threads Library for more information
    about using the POSIX threads debugger.