[Rd] backtick notation

Gabor Grothendieck ggrothendieck at volcanomail.com
Thu Aug 7 08:39:36 MEST 2003

Could someone explain the thinking behind the backtick notation in 

I think I understand that it can be used to refer to variable names
which would otherwise not conform to R syntax; however, assign and
as.name already allow you to do this.  Is there more to it than that?

Is backtick notation supposed to be analogous to backticks in the 
UNIX shell, the $ sign in perl or some feature in lisp/scheme?

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