Where are my hotbar arrows?

[Retribution]

I downloaded the Steel mod. The author noted that he integrated some hotbar features:

3/4 sized, hotkey indicators on/off, page selector on/off

I installed it, and the arrow keys next to any given hotbar that let me change which bank of hotbars it indicates is gone. How do I get it back? I've surfed through the UI commands and have no luck.