how do you prevent extraneous styles from becoming embedded?

B

bstill

I'm a writer and use styles a lot. Frequently, by the end of a project, my
styles list is a mess with entries such as "1. text 2", "2. text 2", instead
of just "text 2". How can I clean this up, first of all, and secondly, how
can I prevent it from happening in the first place?
 
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