FFVI: Veteran Edition

Yup, you and Angelo are both correct. The '/' character serves no purpose in searching for an offset - it's just there like Angelo said, to make it easier to distinguish what bank you're in.
Here's an example if you want

CC/2341 = C2341 with Hi Rom, which you will ALWAYS want on when event editing, as far I believe.

Once you feel comfortable with things like changing what maps load and changing songs, definitely don't feel bad to ask anything - mistakes WILL happen with event editing. Event editing can make you want to jump off NINE cliffs (which you might be dead after the first one) but never feel constrained staying 100% in the boundaries that the original coding FF6 had laid out for you if you want to spice and add more to your game.
If I'm not here to help, there's Angelo and Gi Nattak who I'm sure would be glad to. Part 2 of my tutorial is being uploaded too after the deletion of the file. Definitely check it out - it deals with action queues, the building blocks for any event editor IMO.