How does ispCP work underneath ?

[Eminos]

Hi,

I'd like to know how ispCP actually works underneath.
There are these "backup, parts, working" files and directories that store the settings and stuff, but I never took time to figure it out how it actually works.

Maybe someone could guide us noobs a little bit through this.
For example, what does actually happend when you add a new domain from the control panel? Where is it added? What roll does the database have? And how should you make manuall changes to stuff if you don't want them to be overwritten the next time you make a change in the control panel?
How does it all connect to each other?

Thanks

/E