Settings Clustering Clustering is used to group nearby markers together. Option Description Enable Clustering Toggles clustering on or off Min Zoom Minimum zoom level at which clusters are generated Max Zoom Maximum zoom level at which clusters are generated Radius Cluster radius (in pixels) Extent Tile extent - radius is calculated relative to this value Project Exporting Clicking the Export button will save your sources and layers to a file and download it to your device. Importing Clicking the Choose file button will prompt you to upload a MapEngine export file. The application will remove any existing data and rebuild the sources and layers ( including their visibility, style, target filter, and relationships ) contained in the export file.