Library /sys$common/syshlp/dce$cdsbrowser.hlb Overview, customize, save_virt_root_set  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Once you have entered one or more virtual root names,
  subsequent displays of the Virtual Root selection
  box show an alphabetized list of the most recently
  specified names.

  To save the list of virtual roots from one Browser
  session to another, choose the Save Virtual Root
  Settings from the Customize menu