Dear Herb,
These things happen.
I have been interpreting the CBF coordinate system as being a
generalised form of the d*TREK one. I read the definition on page 26 of
the document that I have found here:
http://www.rigaku.com/downloads/software/free/dTREK%20Image%20Format%
20v1.1.pdf
to
Dear Colleagues,
Please pardon the shotgun distribution of this query. It may only
directly concern a few beam-line scientists and software developers,
but comments from all interested parties are welcome.
Many people have happily used the IUCr imgCIF dictionary definitions
in data