Changes

'''Parchment''' is animal skin prepared to receive writing. Parchment is often used to mean any skin used for writing, although it strictly means only sheep or goatskin, while the term vellum means only calfskin.

'''Parchment''' is animal skin prepared to receive writing. Parchment is often used to mean any skin used for writing, although it strictly means only sheep or goatskin, while the term vellum means only calfskin.<ref>https://libwww.library.phila.gov/medievalman/glossary.cfm#m_q</ref>