Library /sys$common/syshlp/dbg$uihelp.hlb DEBUGUI, command_help  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  You can enter debugger commands as follows:

   -  At the command-entry prompt in the command view.

   -  In certain debugger dialog boxes (for example, when assigning a new
      command to a push button on the push-button view).

  To display help on debugger commands and various topics:

   -  Choose On Commands from the Help menu of a debugger window.

   -  Choose the command name or other topic (for example,
      Language_Support) from the list of Additional Topics.