VMS Help FORTRAN, /LIBRARY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  /LIBRARY

  Indicates that an input file is a text library.  (The INCLUDE
  statement in a Fortran program allows you to extract modules from
  text libraries.)

  The /LIBRARY qualifier can be specified on one or more text library
  files in a list of files concatenated by plus signs (+).  At least
  one of the files in the list must be a nonlibrary file.  The
  default file type is TLB.

  The FORT$LIBRARY logical name may also be used to specify default
  text libraries.  See the FORTRAN Logical_Names help topic for more
  information.

  For more information on text libraries, see your user manual.