Quick question, I hope.

I have a project where some classes use base 'blah' while others use parent 'blah'. The Doxygen class hierarchy makes multiple trees where there should be only one. If all classes consistently use the same mechanism, there's only one tree.

Is there a way to force Doxygen to group the bases and parents together?

(For full disclosure, I've spent a few minutes searching the web, and the TOC of Doxygen, and nothing jumps out at me.)