or the suggestive :) ?"[" b On Mar 13, 2008, at 2:58 PM, Henrique Dallazuanna wrote: > On 13/03/2008, John Kane <jrkrideau at yahoo.ca> wrote: >> Can you point me to some documentation that discusses >> these usages. I have seen them before but I have never >> actually figured out how to use them.? > > See ?Extract