I have flown used v5.1 that a friend of mine owns. So when I had an opportunity to purchase v4.0 from
another friend who didn't want his anymore, I jumped at the chance.

I am very surprised to see that is VERY similar to v5.1. Everything seems to be there except the
photorealism and sound card support.

I also notice that there also are a collection of Scenery Disks available (I saw a reference to Scenery
Disk #12).

My friend only gave me the one diskette with the excecutable.

Questions:

1.) What exacly are Scenery Disks?

2.) Are the available to purchase anywhere?