line

Line can be defined as the path of a moving point and is an important element of art.

mathworld.wolfram.com/PascalLines.html



http://hareemquadri-line.blogspot.com/2011/02/line.html

this style of drawing is called cross contour drawing


http://drawsketch.about.com/od/drawinglessonsandtips/ss/crosscontour_2.htm

you can also use line to create a variety of patterns
http://www.hollydean.com/holly_dean_blog_often_medieval_in_mood.php?published-min=2010-10-01T00:00:00-00:00&published-max=2010-11-01T00:00:00-00:00



http://www.graphicxtras.com/images/photoshop_patterns02_gall.png