Library /sys$common/syshlp/DTM$DW_HELPLIB.HLB  —  overview  set_up, des_lib, choose_lib
  To open the current DTM library, perform the following
  steps:

  1. Pull down the Library menu.

  2. Choose the Open... menu item.

  The Open Library dialog box contains a field for
  entering the DTM library name.
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