Establishes default qualifiers (/LINE, /INTO, and so on) for the
    STEP command.

    Format

      SET STEP  step-default[, . . . ]

1  –  Parameters

 BRANCH

    Subsequent STEP commands are treated as STEP/BRANCH (step to the
    next branch instruction).

 CALL

    Subsequent STEP commands are treated as STEP/CALL (step to the
    next call instruction).

 EXCEPTION

    Subsequent STEP commands are treated as STEP/EXCEPTION (step to
    the next exception).

 INSTRUCTION

    Subsequent STEP commands are treated as STEP/INSTRUCTION (step to
    the next instruction).

    On VAX processors, you can also specify one or more instructions
    (opcode[, . . . ]). The debugger then steps to the next
    instruction in the specified list.

    On VAX processors, if you specify a vector instruction, do not
    include an instruction qualifier (/UNALIGNED_DATA, /MODIFY, /0,
    or /1)) with the instruction mnemonic.

 INTO

    Subsequent STEP commands are treated as STEP/INTO (step into
    called routines) rather than STEP/OVER (step over called
    routines). When INTO is in effect, you can qualify the types
    of routines to step into by using the [NO]JSB, [NO]SHARE,
    and [NO]SYSTEM parameters, or by using the STEP/[NO]JSB,
    STEP/[NO]SHARE, and STEP/[NO]SYSTEM command/qualifier
    combinations (the latter three take effect only for the immediate
    STEP command).

 LINE

    (Default) Subsequent STEP commands are treated as STEP/LINE (step
    to the next line).

 OVER

    (Default) Subsequent STEP commands are treated as STEP/OVER (step
    over all called routines) rather than STEP/INTO (step into called
    routines).

 RETURN

    Subsequent STEP commands are treated as STEP/RETURN (step to the
    return instruction of the routine that is currently executing-
    that is, up to the point just prior to transferring control back
    to the calling routine).

 SEMANTIC_EVENT

    (Alpha only) Subsequent STEP commands are treated as
    STEP/SEMANTIC_EVENT (step to the next semantic event).

 SHARE

    (Default) If INTO is in effect, subsequent STEP commands
    are treated as STEP/INTO/SHARE (step into called routines in
    shareable images as well as into other called routines).

 NOSHARE

    If INTO is in effect, subsequent STEP commands are treated as
    STEP/INTO/NOSHARE (step over called routines in shareable images,
    but step into other routines).

 SILENT

    Subsequent STEP commands are treated as STEP/SILENT (after a
    step, do not display the "stepped to . . . " message or the source
    line for the current location).

 NOSILENT

    (Default) Subsequent STEP commands are treated as STEP/NOSILENT
    (after a step, display the "stepped to . . . " message).

 SOURCE

    (Default) Subsequent STEP commands are treated as STEP/SOURCE
    (after a step, display the source line for the current location).
    Also, subsequent SET BREAK, SET TRACE, and SET WATCH commands
    are treated as SET BREAK/SOURCE, SET TRACE/SOURCE, and SET
    WATCH/SOURCE, respectively (at a breakpoint, tracepoint, or
    watchpoint, display the source line for the current location).

 NOSOURCE

    Subsequent STEP commands are treated as STEP/NOSOURCE (after a
    step, do not display the source line for the current location).
    Also, subsequent SET BREAK, SET TRACE, and SET WATCH commands
    are treated as SET BREAK/NOSOURCE, SET TRACE/NOSOURCE, and
    SET WATCH/NOSOURCE, respectively (at a breakpoint, tracepoint,
    or watchpoint, do not display the source line for the current
    location).

 SYSTEM

    (Default) If INTO is in effect, subsequent STEP commands are
    treated as STEP/INTO/SYSTEM (step into called routines in system
    space (P1 space) as well as into other called routines).

 NOSYSTEM

    If INTO is in effect, subsequent STEP commands are treated as
    STEP/INTO/NOSYSTEM (step over called routines in system space,
    but step into other routines).

2  –  Description

    The SET STEP command establishes default qualifiers for
    subsequent STEP commands. The parameters that you specify in
    the SET STEP command have the same names as the qualifiers for
    the STEP command. The following parameters affect where the STEP
    command suspends execution after a step:

       BRANCH
       CALL
       EXCEPTION
       INSTRUCTION
       LINE
       RETURN
       SEMANTIC_EVENT (Alpha only)

    The following parameters affect what output is seen when a STEP
    command is executed:

       [NO]SILENT
       [NO]SOURCE

    The following parameters affect what happens at a routine call:

       INTO
       OVER
       [NO]SHARE
       [NO]SYSTEM

    You can override the current STEP defaults for the duration of a
    single STEP command by specifying other qualifiers. Use the SHOW
    STEP command to identify the current STEP defaults.

    Enabling screen mode by pressing PF1-PF3 enters the SET STEP
    NOSOURCE command as well as the SET MODE SCREEN command.
    Therefore, any display of source code in output and DO displays
    that would result from a STEP command or from a breakpoint,
    tracepoint, or watchpoint being triggered is suppressed, to
    eliminate redundancy with the source display.

    Related commands:

       SHOW STEP
       STEP

3  –  Examples

    1.DBG> SET STEP INSTRUCTION,NOSOURCE

      This command causes the debugger to execute the program to the
      next instruction when a STEP command is entered, and not to
      display lines of source code with each STEP command.

    2.DBG> SET STEP LINE,INTO,NOSYSTEM,NOSHARE

      This command causes the debugger to execute the program to
      the next line when a STEP command is entered, and to step into
      called routines in user space only. The debugger steps over
      routines in system space and in shareable images.