Dictionary object help!!!

Can somebody help me interpret this piece of code... it has to do with dictionary objects...


dim wk, summary
Set summary = CreateObject("Scripting.Dictionary")

comKey = job &" "& item &" "&billingstatus &" "& pitem

set wk = summary ( comKey )

it's the last line I don't get. This is not the full sample of code. I just can't seem to figure out what the...

set wk = summary(comKey)

...means. If wk is just a variable why use the Set keyword? Thanks for any possible help. Just FYI, somebody at work coded this and he's since left. I'm TRYING to continue his work but I'm just a junior.

So far as I know this should just return a string and the Set keyword is indeed superfluous!

Thanks.