2VDE, UTILITIES, OpenVMS Source Code Control System?The VDE tools allow you to maintain and to control multiple CMSlibraries as a single unit.?Full documentation of VDE is available in Postscript, HTML, andBookreader formats.CVDE requires the presence of various software tools, including CMS Aand Oracle Rdb. Complete details are in the installation manual.APLMENU is a set of procedures layered on VDE and CMS that provide?various functions. A subset of PLMENU tools are included here.