ZeeMaps now allows you to sub-group your markers. For example, suppose we have two major groups of markers: Schools and Hospitals. Rather than display all schools and hospitals as one long list each, we can define sub-groups for Schools, e.g., Kindergarten, Middle School, High Schools, and for hospitals, e.g., County Hospitals and Private Hospitals.
To create sub-groups, we use the same menu item as to create groups, i.e., Map -> Legend. This menu results in a tree display of all the available colored markers. We use the tree view to drag-and-drop our markers into a two-level hierarchy of groups and sub-groups.
The listing of the entries is now better organized with groups and sub-groups:
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