[R] expression + paste + arguments + ...

[ivo_welch-rstat8783@mailblocks.com]

dear R wizards:  I would like to write a function that roughly places 
the equivalent of the following latex text into the current plot:

   \newcommand{ \placesigma }[4]{ \put(\#1,\#2){ \sigma_{A , #3} = #4 }

I cannot figure out how to do this.  I know I have to use a function 
that uses expressions in a text() invoke.  But passing arguments and 
nesting strings and expressions has so far not worked for me.  I hope 
this is an obvious question---if not, please just tell me and I can 
give up.  help appreciated.

sincerely,

/iaw