The webpage contains an embedded list of GPS coordinates for places with the number of Events occurring at each place. The list is set up for output to the Heatmapping overlay feature of a selected [https://wikipedia.org/wiki/Web_Map_Service Web map service].

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To create a {{man label|Heatmap}} select menu {{man menu|Reports ▼ Web Pages ▶ Heatmap...}}

The {{man label|Heatmap}} report dialog has the following tabs each are reviewed below.

[[File:Gramplet_HeatmapOptions.png|thumb|right|450px|Heatmap Options tab]]

This tab allows the following options to be selected: