rendering only a part of a score

[Ewald Gutenkunst]

Dear community,

is there any way to render only a part of a score? I know the functions 
 
showFirst/LastLength = R1*5    and
Score.skipTypesetting = ##t ##f

but, for example, if i want to do a fine tuning of some objects,
the layout ist lost in that range, so I have to render the complete score to 
see the exact difference.

I see the problem, that a little change anywhere can affect the complete 
layout, page- and system breaking and perhaps there is theoretically no way, 
but it would be a great help, if all changes, overrides, slur/tie beginnings 
would be present in that selected range.

What's about a "fast rendering" option for a few bars, with all important 
information, but without any breakings and page-layout - only rendered in one 
vertically system - like the Panorama view in Sibelius?


thanks
Ewald