Specify how component details (i.e. WSDL Definition Documentation / XSD Component Documentation blocks) are grouped across the documentation file.

Possible Choices:

"by namespaces"

Component details are grouped by namespaces, which those components belong to
"by files"
Component details are grouped by WSDL/XSD files where those components are defined
"all together"
The details of all components are grouped together in a single section (after Overview Summary).

Note: Of course, in addition to that, within each single group components are always grouped by their types.