Not an expert, but I spent a lot of time looking at spanish 17th century notary books ;-) I guess handwriting in pre-press texts (incunables) is "designed" to

Not an expert, but I spent a lot of time looking at spanish 17th century notary books ;-) I guess handwriting in pre-press texts (incunables) is "designed" to be easy to copy. If you look at the textura (gothic) script it is based on the same pen movement with a flat pen. You cannot improvise too much with that kind of pen. This looks a feature to me, because the cost of writing on vellum, mistakes were very expensive.