[Question] mod_perl2 W3C HTML Tidy handler location

[Joseph Crotty <suppressed>]

Want to set up tidy to automatically pretty print and indent HTML  
(i.e., post PHP processing) and show errors via a mod_perl handler,  
but not sure where to best do that?  Output Filter?

Or is there an easier way to do this without using mod_perl2?  I have  
dug around on Google extensively and not coming up with any examples  
mod_perl or otherwise.

Thanks,

Joe Crotty