Ensuring That Stylesheets Output Valid XML

Stylus Studio cannot automatically generate a stylesheet that will always generate a valid XML document. As defined by the W3C, an XML document is considered to be valid if it conforms to the DTD with which it is associated.

For example, consider a stylesheet that has required attributes. In order to specify meaningful values for them, you need to have insight as to the semantics of the operation the stylesheet is performing, and it is difficult for any application to infer this type of information. Always check to see that the stylesheets you create using the XSLT mapper generate valid input.