Use the Customize menu to specify a virtual root,
  a directory where you want to start displaying the
  namespace. You can also use this menu to save the list
  of virtual roots from one Browser session to another by
  choosing Save Virtual Root Settings.

  The virtual root is useful if you have interest in
  setting your starting point at a particular directory
  in the namespace or if you do not have read access to
  the root directory (/.:) when the Browser first starts.
  To display and expand a directory to which you do have
  read access, specify its name as the virtual root.

1  –  virt_root

  You can specify a virtual root, a directory other than
  the root, at which you want to start displaying the
  namespace.

  This is useful if you have interest in viewing only
  a particular directory in the namespace or you do
  not have read access to high-level directories in the
  namespace.

  To set a virtual root, choose Virtual Root from
  the Customize menu and a Virtual Root selection box
  appears. At the Selection prompt, enter the full name
  of the directory (including the namespace nickname, if
  necessary) that you want to be the virtual root.

  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. The list always includes the root
  directory (/.:) of the default namespace. Double click on
  a directory name in the list to cause it to become the
  new virtual root or type it in at the Selection prompt.

2  –  save_virt_root_set

  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