Specifies that a file is a text library file.

  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 use of text libraries is discussed at length in the HP Fortran
  for OpenVMS User Manual.