What are they supposed to do? How are they different from just Left Right?
Fit text should have an option Above line or Inside should already throw text above line (it’s never good inside of Inline dim), 'cause it fits more small dim situations better than any Left/Right. It’s also should be a default in Fit text (Auto).
HintLeft/HintRight
HintLeft and HintRight are automatically selected based on where you pick to place the dimension line. Picking on the left, HintLeft is selected. Picking on the right, HintRight is selected. When the dimension is changed, and the dimension text no longer fits between the extension lines, the dimension text will be moved to the left or right side.