Can you comment out expressions when writing HCM approval rule conditions?

Is it possible to comment stuff out in expressions in Approval Rules > Configure rule conditions?

This would be helpful as our approval rules are so lengthy and contain so much logic that having "comments" or explainer text would be helpful. It is difficult, time consuming, and thus costly to maintain our approval rule conditions.

I know in SQL this can be done with two dashes "—", and in HTML it can be done with "<!— comment —>". Is something similar possible to help us maintain our approval rule conditions?