Frequently Asked Questions
Users may notice that this version of OPUS contains a sub-version letter
(the 'b' in 5.4b). This is simply because this particular configured
build of OPUS corresponds to an internal STScI software delivery at
the 5.4b level - a rebuild of 5.4 with some enhancements.
Release 5.4b is just as complete and well-tested a build as any other public
OPUS release has been.