the shift key allows the user to shift capslock off temporarily. This is the use case of all draftsmen I know, as the only time lowercase is used on drawings is for some dimensions (eg: the unit for millimetres is 'mm' in lower case). So that functionality as part of capslock is necessary too.

Finally, a concrete use case for this behavior. Thank you!

P.S. I wish we had more of these, and/or in a more discoverable form. It all works a lot better for me -- including remembering things -- when I know the reason(s).

Things often go down better, with a bit of context.