Style guide
From RAWiki
Videos
You can use the EmbedVideo functionality to embed videos from over 20 popular video hosting sites including vimeo and youtube.
To embed youtube videos more quickly you can also use the youtube tag, go the the video's youtube page and extract the unique video identifier string from the youtube video's URL like this:
For the video at this location: "https://www.youtube.com/watch?v=CcqxI7a6wSM" The identifier is CcqxI7a6wSM
Paste the identifier in between the youtube tags using the following format.
<youtube>CcqxI7a6wSM</youtube>
This displays like this: