Where to indicate language-specific conventions or preferences?

Hello Carrieseltzer,

Yes, that's what I meant from the project page.

Translators can navigate to this page by clicking on the Need more help? Ask for more information link displayed in the documentation section when translation a message.

On this page, you can then add a header that links to an FAQ page.

Abijeet Patro (talk)15:11, 27 May 2019