Migrating from CodeIgniter

[eluser]jonez[/eluser]
[quote author="CroNiX" date="1387564495"]Or a simpler way to put it:

If it's in /system, it is OSL3.

If it's in /application, it's yours.

Since core extensions (prefixed with MY_) go in /application, those are yours.

Only if you ever modify a file in /system does it fall under OSL3. I've never, ever, needed to do that personally.

In reality, no one would ever have a way to know if you did change /system files unless you released the source code.[/quote]
That's a much better way to summarize a migration. I added more then necessary since I made a few mistakes in previous posts.