about scanning WSH...

I installed avast! home in my PC.
I find it’s easy to use and protective enough for me.
But I still have a quetion.
On the web it says “scipt blocker” only for pro.Then I find avast! home can also scan the WSH-scipt files…
Is there any difference between the two?

The Script Blocker is a special module for script scanning on-the-fly.
The script file will be scanned with Standard Shield when it starts to run.

Well, as far I understand…