 Within the walls of a scriptorium were individualized areas where a monk could sit and work on a manuscript without being disturbed by his fellow brethren.If no scriptorium was available, then "separate little rooms were assigned to book copying; they were situated in such a way that each scribe had to himself a window open to the cloister walk".By the 14th century, the cloisters of monks writing in the scriptorium had almost fully given way to commercial urban scriptoria, especially in Paris, Rome and the Netherlands.