Causes  a  screen  display  to  be  selected  with  a   specified
     attribute.   For  example,  SELECT/SCROLL  OUT  selects  the  OUT
     display with the "scroll" attribute (attributes are indicated  on
     the  top  border  of  the display).  The "scroll" attribute means
     that the keypad keys KP2, KP4, KP6, and KP8, scroll,  expand,  or
     move that display.

     Other attributes include:

     error - error messages are directed to that display
     input - input lines are echoed in the display
     output - debugger output is written to that display
     program - your program's output goes to the display
     instruction - EXAM/INST centers the display
     source - TYPE or EXAM/SOURCE centers the display

 Format:

     SELECT [/qualifier...] [disp-name]

     You un-select an attribute from a display by omitting the display
     name,  for  example, "SELECT/INPUT" to remove the input attribute
     from whatever display it is on.

Additional information available:

ExamplesParametersQualifiers

     ! Select OUT as the input and error display as well as being
     ! the output display. This causes debugger input, output, and
     ! error messages to be intermixed in the scrollable display OUT.
     !
     DBG> SELECT/INPUT/ERROR OUT

     ! Select SRC2 as the current source and scrolling display.
     !
     DBG> SELECT/SOURCE/SCROLL SRC2

     ! Remove the source attribute from any display.  TYPE commands
     ! then just go to the OUT display.
     !
     DBG> SELECT/SOURCE

 disp-name

     The name of the screen display to be selected.  If this  name  is
     omitted, the current select setting is cancelled.

Additional information available:

/ERROR/INPUT/INSTRUCTION/OUTPUT/PROGRAM/SCROLL
/SOURCE/SUFFIX

     Select the specified screen display as the current error display.
     This  means  that  debugger  error  messages are directed to that
     display.  By default, debugger error messages go  to  the  PROMPT
     display,  which  is not scrollable.  If you do "SELECT/ERROR OUT"
     then the  error  messages  go  to  the  scrollable  display  OUT.
     SELECT/ERROR  with  no display name puts the error attribute back
     on the PROMPT display, which is the default.  Hence, SELECT/ERROR
     PROMPT and SELECT/ERROR are equivalent.

     Select the specified screen display as the current input display.
     This  means that debugger input lines are echoed in that display.
     Note that you  are  always  prompted  for  input  in  the  PROMPT
     display; selecting another display with the input attribute means
     that your input lines are also echoed in that other display.

     By default, no display is selected with  the  "input"  attribute.
     If  you enter the comand "SELECT/INPUT OUT" then your input lines
     are echoed in the scrollable OUT display.  That  is,  your  input
     and  debugger output are intermixed in that display.  Some people
     prefer this so that they can see what input line caused what line
     of debugger output.

     Select the specified screen display as  the  current  instruction
     display.   This  means  that  output  of  an  EXAMINE/INSTRUCTION
     command goes to the specified  display.   The  specified  display
     must be an instruction display in this case.

     Select  the  specified  screen  display  as  the  current  output
     display.   This means that all normal debugger output is directed
     to that display.  The specified  display  may  not  be  a  source
     display  or  an  instruction display in this case.  SELECT/OUTPUT
     with no display name puts the  output  attribute  on  the  PROMPT
     display.   Hence,  SELECT/OUTPUT  PROMPT  and  SELECT/OUTPUT  are
     equivalent.

     By default, your program's I/O is directed to the PROMPT display.
     This is done by setting the scrolling region to that display just
     before the debugger returns control to your program.   Currently,
     SELECT/PROGRAM  is  very restricted:  you cannot give the PROGRAM
     attribute to any display other than PROMPT (this restriction  may
     be  removed  at  a  future  time).   You  can  enter  the command
     SELECT/PROGRAM which removes the  "program"  attribute  from  the
     PROMPT  display.   Then  the  debugger takes no special action to
     redirect your program's I/O  (which  may  be  desirable  if  your
     program  does  no  I/O  or if you have explicitly redirected your
     program's I/O to another terminal).  SELECT/PROGRAM  PROMPT  puts
     the "program" attribute back on the PROMPT display.

     Note - on VAXstations, the  debugger  comes  up  in  a  different
     window  from  your program, so there is no need to direct program
     I/O to the PROMPT display in  this  environment.   Therefore  the
     default  for  VAXstations  is  for  the "program" attribute to be
     un-selected.

     Select the specified screen  display  as  the  current  scrolling
     display.   This  means that the SCROLL command by default scrolls
     this display unless a different display is explicitly  specified.
     The  commands  EXPAND  and  MOVE  also manipulate this display by
     default.  Note, although the PROMPT display may  be  selected  as
     the  current  scrolling  display,  the  PROMPT display may not be
     scrolled.  It may however be moved and expanded.  (See HELP  MOVE
     and HELP EXPAND for more information).

     Select  the  specified  screen  display  as  the  current  source
     display.   This  means  that  the  output of all TYPE and EXAMINE
     /SOURCE commands go to  the  specified  display.   The  specified
     display must be a source display in this case.

     Note:   This  qualifier  applies  to  a  multiprocess   debugging
     configuration (when DBG$PROCESS has the value MULTIPROCESS).  Use
     this qualifier only directly after a display name.

     Appends a process-identifying suffix  to  a  display  name.   The
     suffix  denotes  the  visible  process.   This  qualifier is used
     primarily  in  command   procedures   when   specifying   display
     definitions   or  key  definitions  that  are  bound  to  display
     definitions.  Use any of  the  following  process-identifier-type
     keywords:

        PROCESS_NAME     The display-name suffix is the VMS process name.

        PROCESS_NUMBER   The display-name suffix is the process number
                         (as shown in a SHOW PROCESS display).

        PROCESS_PID      The display-name suffix is the VMS process
                         identification number (PID).

     If  you  specify  /SUFFIX  without  a  process-identifier-   type
     keyword,  the  process  identifier type used for the display-name
     suffix is, by default, the same  as  that  used  for  the  prompt
     suffix (see SET PROMPT/SUFFIX).