Wide Line
A wide line weapon functions as a weapon with the line weapon special property, except the line is 10 feet wide. When determining the squares that are in the path of a line, note which squares that line would normally pass through, and extend the area to one side of the line (your choice) so that the line is 2 squares wide. For an obstacle to block the path of a line, it must block the line’s full width; otherwise, the line continues (at full width) beyond the obstacle.
Source
Armory pg. 30
