This task is about verifying DiscussionTools` new `source` mode (T276608) has not caused any regressions in the Reply Tool's [Dirty Diff Rate](https://docs.google.com/spreadsheets/d/10BILtaftfHWjuF7XlvTlZF68r_cpSWakSLFXUOK9Hoo/edit?ts=5f760eb6#gid=320367205).
=== Background
Prior to the DiscussionTools` new `source` mode being made available to all users by default (read: as an //opt-out// setting) in T276609, it is important that we verify this new mode does not cause an increase in the dirty diff incident rate.
=== Dirty diff rate
|Average dirty diff rate in 4 weeks //preceding// new `source` mode's deployment|Average dirty diff rate in 4 weeks //following// new `source` mode's deployment (T276608)|
|---|---
|__%|__%
//Data can be found in: [DiscussionTools usage report](https://docs.google.com/spreadsheets/d/10BILtaftfHWjuF7XlvTlZF68r_cpSWakSLFXUOK9Hoo/edit?ts=5f760eb6#gid=320367205)
=== Done
- [ ] The table in the `===Dirty diff rate` section above is completed
- [ ] A message is posted on the en.wiki Talk pages project page: https://en.wikipedia.org/wiki/Wikipedia_talk:Talk_pages_project (cc @pelagic)