Library /sys$common/syshlp/decw$dxmhelp_help.hlb Glossary, Go back  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The Go Back button and the Go Back item on the View
  menu display the previous help topic.

  Every time you perform a Visit Topic operation or a Go
  To Topic operation, the topic title is recorded in a
  history list. The Go Back operation uses this history
  list to display each previous topic as you request it.