I have no real CAD experience but I have a drawing of a building that I need to print.  It is in dwg format so I downloaded DraftSight to get it to print.  A significant amount of the walls are not printing out.  They are all on the same layer and I edited the layer so that all the lines are the same color and style.  The lines still aren't printing out.  I know that it is probably something simple but I am utterly confused.