[Seaside] attributeAt:put: equivalent

[Ramon Leon]

> 
> plus one remark Damien showed me... to get senders or 
> implementors of non-unary message like #headerAt:put: in the 
> following code:
> 
> self headerAt: 'location' put: aString
> 
> you have to select the message even with the string 
> 'location' and then 
> cmd+m/n...
> 
> Cédrick

Nice, I didn't know that worked, I've always resorted to the method finder
for those.

Ramon Leon
http://onsmalltalk.com