Library /sys$common/syshlp/mms$dw_help.hlb mms, sources PopForm, select Lst  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 The Input Sources Selection list box specifies the list of sources to
 choose from to add to the left-hand list box.

 By default, the list will contain files which are found in the current
 default directory.

 Files can be moved to the left-hand list in three ways:

     o double-click on a file specification

     o highlight a file specification, then click on the left arrow button

     o click on the All button, which will move all the files from the
        right-hand box to the left-hand box