In order to have a clear, readable record of changes made to the E3SM source, its essential for all commit messages to have a similar style and content. We do not use a "ChangeLog" file. The "git log" command and good commit messages replaces the ChangeLog file.
The description of a github Pull Request will be used in as the message for the merge commit message for the branch so all PR descriptions should follow these rules.
All commit messages should have a title AND a body. Just repeat the title for the body if you can't think of anything to add.
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