About the Addon
Heartometer shows a small bar that you can drag anywhere (i prefer above the hotkey buttons) that tracks your notoriety changes. Whenever your notoriety with any faction changes, the bar shows that faction, your current notoriety, notoriety needed to reach the next level, and the sum of changes in the current session.
User Interface
When you first start with the addon loaded, you get a small bar that you can drag just about anywhere. Whenever your notoriety changes with any faction, the bar will switch to that faction and show your current and maximum notoriety in bar as well as text form. Right-clicking the bar will open a list of all factions known to you. Clicking one of these factions will "fix" that faction to the bar, so the bar won't switch to a different faction when that notoriety changes. Open the faction list and right-click the main bar again to restore the standard behaviour.
Slash commands
To hide the bar, use /heart hide. Use /heart show to show it again. To change the size of the bar, use /heart width 300 or /heart height 20. 300 and 20 are the default values, use any values that fit to your screen/UI settings. The font size will adjust to the height of the bar automatically. Since version 0.4, you can use /heart lock to lock the position of the bar, and /heart unlock to unlock it again.