https://wiki.civicrm.org/confluence/display/CRMDOC/Recommendations
(and wiki redirect to go with it)

https://wiki.civicrm.org/confluence/display/CRMDOC/Before+you+start

and more tidying up and grammar etc

Style guide: removing bit about all caps -- couldn't find an example of that in practice in the User Guide

Honestly I don't understand what this section is asking documentation
editors to do. If want this section back in, perhaps you could add some
clarification?

also bring in about half the options

curtesy of
https://www.iconfinder.com/icons/

Original here:
https://wiki.civicrm.org/confluence/display/CRMDOC/Create+a+Module+Extension

still missing some macro content! :-/

Importing "Book Style Guide" wiki page from https://wiki.civicrm.org/confluence/display/CRM/Book+style+guide

The most canonical form is to present entities in camel-case and and to
present actions in lower-case.  This matches the API explorer.