"To revise these sections" means to review, edit, or make changes to the specified sections of a document, text, or other written material. Full definition
Based on what you've said and checking out some additional links, I decided to revise the section on insecure attachments and attachment disorders rather than taking it out altogether. (phdinparenting.com)
For business owners with partners and managers, revising this section means evaluating each person's role in the organization. (entrepreneur.com)
In my experience, it seems that continuity errors in fiction writing are most likely to occur when the author revises sections in separate chunks, when the author puts aside the novel for a few days and then returns to it again, and when the wires of the author and developmental editor cross while making content changes. (girlfridayproductions.com)