Poorly written instructions - Opti-Logic Micro Rangefinders for Archery or Firearm Ballistics

I really like my new Opti-Logic Micro 1 and will use it for bowhunting. I owned an Opti-Logic rangefinder but missplaced it and ordered the Micro 1. The Micro 1 has 3 LED's on the back but no where in the instructions does it tell you what they represent. There is one marked YD that I assume means yards, one marked MT that I have no idea what that represents and one marked BT that I assume is ballistic compensation. The Micro 1 has a mode button that the instructions say ,"Press the Mode "M" button to select a variety of modes" but the only mode given in the istructions is to change the brightness of the internal display. The instructions say, "LED Indicators: 3 LED's on the back panel indicate mode condition." That's it, no other information on the LED's and what they represent. I'm going to contact Opti-Logic for more information on the "variety of modes" and how to access them and also what the LED's idicate.
Pros: Small, light, tilt compensated
Cons: Instructions lacking

This review was written in the old system and had content requirements that are different than reviews written today.