[Groff] Subscripts

[Timothy Groves]

I need to embed subscripts in my document.  In particular, I want 
something that in eqn would be expressed as 'V sub 0' and 'V sub 1'.  
There appears to be no glyphs suitable to this job available in groff, 
and I cannot use eqn in the context that I need this expression, because 
inline eqn produces results inconsistent with the surrounding text.

I am using groff 1.21 and ms.  Any suggestions?