their contributors. However, we do not want the source code to be littered
with random attributions "this code written by J Random Guy" (this is noisy
and distracting). In practice, the revision control system keeps a perfect
- history of who change what, and the CREDITS.txt file describes higher-level
+ history of who changed what, and the CREDITS.txt file describes higher-level
contributions. If you commit a patch for someone else, please say "patch
contributed by J Random Guy!" in the commit message.</p>