Add a link to a new subpage while in the editor

this can be done without wikitext

If you are editing a page and would like to add a link to a sub page that doesn't exist, you can use the following shorthand to add it in the editor. 
 

Example:  If you want to add a page called Dogs as a subpage to the page you are editing you would add the following: 

[[ ./Dogs | Dogs ]]

This is a shorthand wiki syntax which is converted to xhtml on save.