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************************************************************************
* :nick.PIPEFILE   :sec.Unclassified                  :disk.VMTOOLS
* :title.Modern Pipelines file I/O using DMSREAD/DMSWRITE; SFS
* :version.1.1     :date.94/03/03   :summary.PACKAGE  :support.n
* :oname.Bryan Henderson            :onode.STLVM4     :ouser.BRYANH
* :aname.Bryan Henderson            :anode.STLVM4     :auser.BRYANH
* :ops.cms                          :lang.rexx        :source.Y
* :doc.helppipe
* :abs.CMS Pipelines stages to read/write files.  Like FILEFAST and
* FILESLOW, but uses more current DMSREAD/DMSWRITE CMS services to you
* can exploit many SFS features, including I/O to a file without first
* accessing the directory.
* :lic.By placing material on this conference, I agree to grant
* IBM a non-exclusive, royalty-free license for the material
* as set forth in the LICENSE AGREEMNT file on this conference.
************************************************************************
* :sw.SUPERSAY PACKAGE
*
* Warning:  There is a bug in some levels of CMS (around Level 10
* Service Level 401) that causes CMS to go into an infinite loop right
* *after* returning from the PIPE invocation when DMSWRITE is in the
* pipeline.  This only happens if you issue PIPE from the CMS command
* prompt.  You can get around it simply by putting the PIPE invocation
* in an exec.  I believe APAR VM57959 reports the problem, and there is
* a fix for that available.
*
*
DMSREAD  REXX     * Pipelines stage to read records from a file
DMSREAD  HELPPIPE * Documentation
DMSWRITE REXX     * Pipelines stage to write records to a file
DMSWRITE REXXSRC  * Rexx source code for DMSWRITE
DMSWRITE HELPPIPE * Documentation
DMSRDDBK REXX     * Pipelines stage to read raw blocks from a file
DMSRDDBK HELPPIPE * Documentation
DMSWRDBK REXX     * Pipelines stage to write raw blocks to a file
DMSWRDBK HELPPIPE * Documentation
CMSDEBLK REXX     * Pipelines stage to deblock raw file blocks
CMSDEBLK HELPPIPE * Documentation
DMSREAD2 REXX     * Pipeline stage to do what DMSREAD does, but on
                  * CMS before Level 10.  Called by DMSREAD.
DMSWRIT2 REXX     * Pipeline stage to do what DMSWRITE does, but on
                  * CMS before Level 10, and when user wants to add
                  * records to an existing file
DMSWRIT2 REXXSRC  * Rexx source code for DMSWRIT2