# Experimental #

This section contains documentation for features which we think may be useful
to add-on developers, but which we have not yet stabilized. Feel free to use
them, but be aware that they are likely to change in incompatible ways with
future release of the SDK.

### [Using the SDK with XUL extensions](dev-guide/addon-development/xul-extensions.html) ###

How to include modules from the SDK in a XUL-based extension.