Hi Valery,-
	as of today (at least on UNIX) Html doc could be generated only for 
precompiled classes - see the proof below). 
		- regards, pasha.
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root [3] #include "SvxSim/Svx.hh"                                      
.... skip THtml initialization
root [9] .class SVX             
===========================================================================
class SVX
 size=0xe8 FILE:SvxSim/Svx.hh LINE:43
 (tagnum=554,voffset=12,isabstract=0,parent=-1,gcomp=0,=~cd=5)
List of base class--------------------------------------------------------
0x0        public: POBJECT
... skip the rest of the class declaration
root [10] gHtml->MakeClass("SVX")
Error in <THtml::MakeClass>: Unknown class 'SVX' !