The mini-map gives an overview of the content in your mural. It also shows your location within the mural.
You can use the mini screen to zoom and navigate around the mural.
Here's how to do it:
Find the mini-map by scrolling to the bottom right hand corner of your mural. It looks like a gray scale image of your mural, and has a translucent box depicting your location within the mural.
Zoom in and out by clicking the + and - icon above the mini-map.
Use the box within the map to move yourself around the mural. You can click and hold to drag the box within the mini-map and change your view of the mural.
Impress your colleagues with how quickly you can be in the right place on the mural at the right time.