In reply to Mary from London.

Why people assumes that if there are "master" branches, there should be "slave" branches?
I had never thought of it in that terms until this.
Master was always master, as in "master bedroom", "master record", etc.
It's not oppresive language.
Calling "oppresive language" to anything will only devaluate and devirtuate the term. It will backfire its own movement.