WML
Wireless Markup Language (or also known as WML) is an XML-based markup language used in WAP/WML sites.
Since wApua is widely used for browsing WAPsites (as it's currently the only one for PCs), this guide will be based on the WML 1.0/1.2 specifications as these are the ones used by this program.
Cards
Cards in WML allow the creation of multiple pages in a single document, without the need to create WML pages for each section of the site, which can be useful for static or small content.
In conjunction with SSI
It's also possible to use Server-Side Includes in conjunction to WML to make tiny dynamic pages or for inclusions such as headers and footers.