True if the layer must be interpreted as basemap (for background painting). Is important only for bottom most layers.
// Java public bool getBasemap(); public void setBasemap( bool _value );
// Oxygene public property Basemap : Boolean read write;
If an error occurs during Basemap drawing, then basemap will be suspended for 5000 ms. A typical situation is that the server hosting the WMS layer cannot respond timely due to load. So 5 seconds gives a chance to recover. It can be controlled by metadata:
|TGIS_Basemap.FailTimeout||milliseconds||5000||Silent period after a basemap error.|