Library /sys$common/syshlp/dbg$help.hlb DEBUG, SHOW, SELECT, Example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  DBG> SHOW SELECT
  display selections:
       scroll = SRC
       input  = none
       output = OUT
       error  = PROMPT
       source = SRC
       instruction = none
       program = PROMPT
       prompt = PROMPT
  DBG>

      The SHOW SELECT command identifies the displays currently
      selected for each of the display attributes. These selections
      are the defaults for languages.