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

  DBG>  SHOW TERMINAL
  terminal width: 80
           page:  24
           wrap:  80
  DBG>

      This command displays the current terminal screen width and
      height (page) as 80 columns and 24 lines, and the message wrap
      setting at column 80.