corrected link here:
[UK here] Open letters can start with 'we, the undersigned believe xyz...'. Also to underwrite is to give a financial guarantee, for example companies which underwrite insurance companies will make sure the insurance company doesn't go under if they have to make a big payout. Also 'subscribe' in Latin mean 'write underneath'
So in answer, no- but several modern words stem from the concept of 'writing under'.
Is the “paper" here just the one as in "a piece of paper", or it can also mean the kind of paper like a journal article / thesis / dissertation? I look up the dictionary, the latter is "avhandling" or "artikel". Since I have read different explanations in the dictionary and that of explained here for other words, I would like to confirm. Tack! :)