Syntax:  SET LIBRARY library_spec_list

  Identifies the SCA physical libraries to be used for subsequent SCA
  functions.

  This command lets you activate a specified library for use during the
  current SCA session.  If you list several libraries, SCA can access
  all of them during your session as a single logical library.  On VMS,
  the SET LIBRARY command will define a logical name which will be used
  to reestablish the active library list upon subsequent invocations of
  SCA.  On Ultrix, the environment variable SCALIB must be set outside
  of SCA for the library settings to be retained across subsequent
  invocations of SCA.