Taken from this question.
A lot of times, when I'm going through old questions and editing them, I tend to see a lot of formatting and grammatical errors, and I then proceed to fix them.
The problem is that, I rarely find myself ever needing to use the Edit Summary. Not that it isn't useful, but typing out what I did (basic cleanup, retagging, etc) is such a hassle that I rarely go out of my way to fill it in.
Concurrently, the default edit summary will state number of characters changed as well as retagging and rollbacks.
Can we have a button that will allow you to instantaneously add a edit summary? So for example, adding a "formatting" button or "grammatical errors" button would allow for quick, concise edit summaries without inhibiting users who edit a lot of posts.
Also, side note: Would changing the edit summary to a tag based form increase or decrease the quality/quantity of edits? For example, tagging an edit as "spelling", "formatting"