-All PRs need to have a one-line summary in the initial pull description.
-This information is used to automatically generate release notes. Follow this
-style:
+PRs need to have a one-line summary in the *PR description*. This information
+is used to automatically generate release notes. If you got here after creating
+the PR, you need to go to the *PR description* (shown as the first "comment" on
+the PR, made by yourself) and *edit* that description. Editing a PR will
+trigger the "ChangeLog" status to be updated.
+
+For the summary itself, follow this style: