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The minimap is an optional UI component that, when enabled, allows the player to see an overhead view of the current map within a small window. Until some improvements and additions are made to its functionality, it could be considered more of an experimental feature. When it's enabled, you can press the “M” key to show or hide the minimap while playing.
At this time, the minimap is not enabled by default. It can be enabled from the “User Interface” section of your Game Configuration.