Map Preference page is used to supply system wide defaults for the Map Editor.
When checked this option will remove temporary layers from the map. If it is not checked the layer will stay in the map, but all data is lost since the layer is temporary. This option can be useful if the FeatureType is complex and recreating the FeatureType can be time consuming.
Default is checked
Declares what the default CRS is, a value of -1 is used to indicate that the value should be determiend from the data.
You may wish to change this setting when working with a large number of shapefiles that make use of the same projection.
The default value is -1.
The color of the map's background.
Default is white.
The color that selected feature will be drawn in.
Default is dark yellow.