When editing, you can link to other cards in the conventional MediaWiki style of surrounding the link in double-brackets:
- [[Welcome]] renders as a link to the Welcome card with the text "Welcome."
- [[Welcome|Go to the Welcome card]] renders as a link to the Welcome card with the text "Go to the Welcome card."
- [[http://thornton2.com/]] renders as a link off-site with the URL as its text. In this case, the brackets are not required, as all URLs are rendered as functional links.
- [[http://thornton2.com/|Thornton 2 Library]] renders as a link off-site to thornton2.com with the text "Thornton 2 Library."
More to come.