This is a holdover to the SGML days, where this was a pretty important feature, and used quite frequently in many document formats required for government contracting. As I recall, there was lots of consternation about stuff that was thrown away from SGML when XML was built, but this external entity stuck.
This is a holdover to the SGML days, where this was a pretty important feature, and used quite frequently in many document formats required for government contracting. As I recall, there was lots of consternation about stuff that was thrown away from SGML when XML was built, but this external entity stuck.