LSE V3.0 provides for invoking CMS from the LSE  command  line  using
  the  CMS  command.   Also,  when  LSE  must  access  a  file from the
  directory that is the user's CMS library, LSE will automatically  use
  CMS to FETCH the file.  LSE also has a RESERVE command to reserve the
  element in your current CMS library that has the same name  and  type
  as  the  file associated with your current buffer.  The UNRESERVE and
  REPLACE commands also provide the corresonding CMS operation for  the
  file in your current buffer.

  See  the  manual  for  information  "File   Manipulation"   and   for
  descriptions  of  the  following  new or enhanced commands related to
  source code management and CMS:

        CMS
        GOTO FILE
        GOTO SOURCE
        READ
        REPLACE
        RESERVE
        SET CMS
        UNRESERVE