Many thanks for reviewing the help texts. I've gone with nearly all of your suggested improvements (creating
MDL-33675 for Andrew to implement the changes) apart from deciding to reduce the amount of text in a few places.
Regarding aggregating ratings, the sentence 'Ratings can be aggregated to form a final grade which is recorded in the gradebook.' is now included for database, forum and glossary, as they ALL have the same aggregate type setting with options No ratings, Average of ratings, Count of ratings, Maximum rating etc. Thus I didn't mention average specifically.
For forum, I kept 'Participants can subscribe to a forum to receive notifications of new forum posts. rather than going with your suggestion 'Participants can subscribe to a forum to receive new forum posts via email.' since depending upon a user's messaging preferences, they can receive popup notification rather than via email.
Regarding 'differentiated revision' as a lesson use, I think this is indeed a US/UK difference, so please do ask Mark to change it to remediation or enrichment in the en_us language pack.
Thanks again for reviewing the help texts. Your input is much appreciated.