This function creates a closed polygon (polyline) based on lines selected from the drawing.
MOUS_ICO Menu: Landscape > Construct Lines and Polygons > Create Polygon, Select LinesMOUS_ICO Toolbar: Construct Lines and Polygons: Create Polygon, Select Lines
Select lines, arc, or polylines in the drawing and press ENTER. The function will create a closed polyline for the area defined by the selected lines.