WikiLinks provide easy linking between pages of the wiki. To create a WikiLink, just put the name of the page to link to in double brackets. For example "[[WikiLink]]".
If you ever need to write something like "[[WikiLink]] without creating a wikilink, just prefix it with a "\", like "\[[WikiLink]]".
Note that there are some special LinkingRules that come into play when linking between SubPages.
WikiLinks can be entered in any case you like, the page they link to is always lowercased.
Note that if the file linked to by a WikiLink looks like an image, it will be displayed inline on the page.
It's also possible to write a WikiLink that uses something other than the page name as the link text. For example "[[foo not processed]]" links to the SandBox page, but the link will appear like this: foo bar