[Adder]

LOL I just came here to say the same thing. I saw this a few days ago and decided to poke around in Horsey with Notepad++ and found that number. The 30 is indeed the number of slots.

I changed it to 60 and tried it ingame. It does give you up to 60 slots in the options but when I chose 60, it stretched the slots horizontally and made it impossible to close because they extended way past the edge of the screen. I logged out and back in with a different character and tried lower numbers. I managed to open 50 slots and all was good. I stopped there. You may be able to go higher but 60 was just all messed up. This was all done at a screen resolution of 1920 x 1080 with Hi-Rez loaded.

Another problem is that the slots are all on one looong line across the middle of the screen and I haven't yet figured out how to split it into 2 (or more) lines nor how to move the slots bar.