limited scopes.

 <p>While it's possible to differentiate different Content Types by file extension, it's not possible
 to do so for Scopes. Therefore if a transform request a Scope but the only available Output
 contains more than the requested Scope, the build will fail.<br>
 If a transform request a single content type but the only available content includes more than
 the requested type, the input file/folder will contain all the files of all the types, but
 the transform should only read, process and o