this is an anomonous function definition and .week is just the name of the 
parameter I chose to use.  As with any function definition, you can name the 
parameters any way you want.  In this case I have used the '.' to start the 
name just to make it apparent that it is a parameter; personal style.

Sent from my iPad

On Jan 24, 2014, at 1:54, Bill <william...@gmail.com> wrote:

> Dear Jim,
> 
> I am confused by the function
>  function(.week)
> Generally I have not figured it out yet and in particular, why are you using 
> "dot" week as in  
> .week
> Is there any significance to the dot?
> 
> Thanks,
> Bill
> 
> On Wed, Jan 22, 2014 at 10:48 PM, jim holtman <jholt...@gmail.com> wrote:
> function(.week)
> 
> 

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