Changes to init.php and classes

[mudmin]

1) If I make changes to init.php, should I copy init.php to userc/ or can init.php be edited without causing problems with future updates?
2) If I make changes to the existing classes, is there a recommended way of doing that to avoid problems during future upgrades?

Thanks.

You can change init.php to your heart's content.  

As far as classes goes, that gets a little trickier. Can you give me an idea of what kind of changes you want to make?  Also, what about doing something like 

class DBPRo extends DB {