walton91 said:
I have not watched this episode yet, but in one of the S1 recaps I watched it referenced some extra info beyond the episodes themselves. Apparently the writers created some material I think was called the Lexington Letter which suggested there are additional MDR severed employees at another Lumon office location
https://books.apple.com/us/book/severance/id1613220757Its basically a long email from a former Lumon employee to a Topeka newspaper. Not going to spoil it in case anyone wants to read it and hasn't yet, but the gist was: She was in MDR at the Topeka office, and her and her innie start passing notes using a non-alphabet encoding from her childhood.
It also includes the MacroDat Refinement Handbook that the employees receive.
It says it is 43 pages (on my phone), but reads much much shorter than that.