The Source Code Analyzer for OpenVMS (SCA) is an interactive,
  multilanguage, source  code  cross-reference  and  static  analysis
  tool  that is designed to aid developers in  understanding  the
  complexities of large-scale software systems.

  SCA is included in the DECset Software Engineering Tools Package.
  SCA is integrated with the Language-Sensitive Editor for OpenVMS
  (LSE). When SCA is used with LSE, you can interactively edit,
  compile, debug, navigate, and analyze source code during a single
  development session.