I'm requesting that the histogram is part of the curves adjustment display in the Develop persona, as it is in the Photo persona. I've started shooting film for fun and will "scan" the negatives with my digital camera. I'd like to do the scan in RAW even though I suppose it probably isn't necessary. Negative Lab Pro is apparently the best way to invert the negatives but apparently it only works with Lightroom. The other way, after a white balance, is to invert each colour separately with the curves adjustment and move the limit sliders to match the beginning and end of the histogram for each colour. In order to do this properly, the histogram has to be part of the curves display.
I apologize if there is some obvious reason why the Photo persona works this way but Develop doesn't.