[OS X TeX] extendible quotients

[Luis Sequeira]

Hi,

I would like to be able to typeset quotients - such as quotient 
vector spaces or groups - that behave similarly to fractions, i.e., 
automatically extending, according to their parameters: e.g. the size 
and position of the slash depends on what lies above and below. For 
example,  I would like to represent a quotient of quotients, such as 
$(S/R)/(T/R)$ with the middle slash being larger, and (S/R) lying 
slightly above it, while (T/R) lies slightly below (the way one would 
normally do it by hand).

Is there an effective way to achieve this? (Sorry for the OT post, 
but there is so much knowledge on this list and I couldn't find info 
on this)

TIA
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