some more doc
some more doc, possibly relealing a problem.

There is a bug when using 'renderListHoriWithSep' or 'renderListVertWithSep'. One possible reason is (in case of renderListHoriWithSep):
	The seperators might promise to take constant width (have to check!)
	This might lead to
		srcInfo src (x,value)
	to be called with 'value' < 1
	which returns NONSENSE! ;-)

have to think about it.
All in all there are still too many things unspecified...!
going on to document specification of every function via comment
bugfix! found a horrible bug in 'renderListVert'
restructure the code a bit.
restructuring
restructuring