Trimming character strings

[Thom Burnett <Thom.Burnett@cognigencorp.com>]

This should be quick and easy for someone.

How do I remove leading and trailing white space from a string?

nameWithSpaces <- "  John Doe  "
onlyName <- whatFunction(nameWithSpaces)
onlyName
"John Doe"

I thought I saw a function for this some month or so ago but now I can't 
find anything short of using substring one character at a time.
Thanx for any help.

Thom