So, for example, “BC bar” (or “bar over BC”) would be transcribed in UEB Math/Science as follows.
;;<,,bc>:
And, “(line segment) AB = (line segment) CD” would be probably be transcribed as follows.
;;;<,,ab>: “7 <,,cd>:;’
–Kyle
P.S. The DBT codes I would use to get that transcription above are ts e bar e bar te (also in the attached screenshot).