Erase Shapefile With Polygon
This tool allows the user to create holes within a polygon area.
Click on [GIS TOOLS]
Click on [VECTOR]
Click on [ERASE SHAPEFILE WITH POLYGON]
The following will appear
Select the shapefile to erase
Select the shapefile to erase with
Name the result file and file location
Click [OK]. The new shapefile with an erased portion can be added to the legend as a separate layer.