The addon offers 20 configurable buttons that can be used to track either a skill cooldown, an item cooldown, a buff or a debuff (on a specific unit).
It's supposed to make it easier for you to see if you applied all the required debuffs, if your cooldowns are ready or you got some helpful proc.

Commands:

• /clctracker - opens options frame

Short descriptions for the button options available:

• Spell/item name/id: For spells and items you must enter a valid spell id, a valid spell name or a valid item id, a valid item name (item must be in your possesion). For buffs/debuffs you can enter anything, it won't be check. You need to have a text there in order to activate the button.
  
• Debuff List: Works for both buffs and debuffs. You can enter a list of buffs/debufs (separated by ENTER) to track for stuff like Demoralizing Shot/Demoralizing Roar/Vindication. Atm you still need to enter any text in the previous field in order to activate the button.
  
• Type: You can select what behavior the button has.
  
• Target unit: Unit to scan for buffs/debuffs.
  
• Cast by player: Also specific to buffs/debuffs.It doesn't show the button unless the buff is cast by the player. List checks ignore this option.