Line: A mark made by a tool as it is drawn across a surface. The tool can be almost anything – a pencil, a pointed brush, a computer and mouse, even a cotton swab. Also, a line is defined as a moving dot or point, or can be called an open path. Line can describe shape, so we can recognize objects.
Implied Line: A line created by positioning a series of points so that your eye automatically connects them.
Psychic Line: No real line, there is a mental connection between two elements.
Horizontal Line: implies quiet and repose, tranquility.
vertical line:has potential for activity or movement, also represents strength and nobility
Diagonal Line: suggests motion.
contour line : A line that follows edges of forms, to describe outlines.
gesture line : A line that shows action or dynamics of a pose