application in IIS

I'm installing, and I came across the following in the readme. Can you tell me more?

"WebExplorer Pro does not need an application in IIS to be created but it will be more efficient if you are able to do it."

tia
Colin

Hi Colin,
Firstly thanks for your purchase.
If you have the control over your server, you can create an application in IIS. If you don't have the ability to create it, that doesn't matter much either; WebExplorer Pro will use the application of your default site.
Creating an individual application should be more efficient as WebExplorer Pro would be isolated from the errors of your other ASP scripts.