Cross Section Annotation Filter

I've search high and low and am not able to find any documentation on "Annotation Filters" and how the "expressions" work.

There's nothing in OpenRail Designer Help Website about Annotation Filters or Cross Section Frame Annotation.

Does anybody have a link to a Wiki or Video that goes through either the Annotation Filters/Expressions and/or Frame Annotation Settings?

RailTrack V8i SS2 had a very simple and straight forward Dialog for setting up Frame Annotation (no filters/expressions necessary) and It's been replaced by this code heavy dialog with no supporting documentation.

(Below are example of what was available in BRT SS2)

Telling our clients that we're just not able to annotate cross sections any more is NOT AN OPTION. Change is fine, but change without documentation or available training is just ridiculous. 

With a software able to automate a plethora of things and do 3D design so efficiently you'd think it wouldn't regress on the Plans Production aspect. I'll save my collision free leader lines and cross section range lack of options for another time.