16.1 Styles - " This saves disk space and allows styles to integrate seamlessly into the overall document style." Should be a note or nothing. I suggest nothing. (delete)

Delete " This saves disk space and allows styles to integrate seamlessly into the overall document style."

"two main reasons" -> "two reasons"

And 1) and 2) become:

1) Format information is separated from document content

2) Styles enable consistent formatting and changing of formatting for objects subject to styles.