[meithecatte]

I have heard of at least one instance of an exam a while ago, where some questions – ones that need diagrams in their statement – would be written onto the blackboard in the exam room, due to limitations of the duplication techniques used for the exam paper.

[c6400sc]

I'm guessing one of these questions had to deal with a timetabling diagram.

https://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=...