When editing Wikipedia, there is a field labeled "Edit summary" below the main edit box. It looks like this:
Edit summary (Briefly describe your changes)
 | This template is used on approximately 9,400 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them. |
Usage
This inner template is used inside two other templates:
Variations
These are varied forms of the inner styled edit summary field.