Inspect Other Layers tool lets you display the attributes of the custom layers added to your GMS while using the ?custommap URL start parameter.
You can costumise customise the displayed data via the GMS Admin console using the Schema tab of the custom layer Properties. This short guide describes the process.
First, the content of the Inspect window can be controlled by checking and unchecking the Visibility box. This way user can switch off and on the visibility of columns displayed in the inspection box.
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