As far as I know, preview pane is available only from Win Vista and up.
For people who don't know what preview pane is, here is a suggestive pic:
![Image](http://imagizer.imageshack.com/img673/8165/13n36b.jpg)
There is an app I found with which you can add preview handlers to file types, but ofc there are no preview handlers for lev files. So one must be created, I guess. The app is HERE
I assumed there is a preview handler creator, but only found out a preview handler editor tool HERE.
This sums up my search on the matter. I will keep searching and reading articles on how to create a new preview handler, but I suck at programming so... dunno.
Maybe someone can help. I think being able to preview levs would be a great feature when trying to find a certain lev.
Edit 5 mins later:
I found an interesting article and trying to figure out if this might work:
https://msdn.microsoft.com/en-us/librar ... 85%29.aspx