Best way to organise in s7

Hi guys,

For you guys that use S7, I wanted to ask what is the best way to store a program with different versions. Im quite new to using simatic so please bare with me.

The reason way I ask, is I have a program that I keep modifying as I develop new ways of doing things but I quite like to keep a record of the previous versions. At present I make a different projects but its starting to get messy.

Any information would be greatly appreciate...

Is this the best way of saving them within a project?