User blog comment:Ubersketch/A proposal for a standard/@comment-11227630-20190813030043/@comment-11227630-20190813044733

In the example, 4 does not affect the comparison algorithm; 2 and 3 simply remove the corresponding part of comparison algorithm; 1 is nontrivial, and might need some modification. The change of comparison algorithm along with those changes are easier than the following.

5 is the most difficult one (also applying on other OCF), because the \(\vartheta\)-way and the \(\psi\)-way give completely different values, hence different comparison algorithms. In \(\psi\)-way, the monotonicity is more important, I guess. But I have no idea about specific comparison algorithms currently.