*pattern-name, description of pattern

angle, x-origin, y-origin, delta-x, delta-y [, dash1, dash2, ...]
angle, x-origin, y-origin, delta-x, delta-y [, dash1, dash2, ...]
angle, x-origin, y-origin, delta-x, delta-y [, dash1, dash2, ...]
.
.
.

Delta-x: Specifies the offset of successive lines, for 90 deg lines this becomes y.

This applies only to dashed lines and is measured along the direction of the lines.

Delta-y: Specifies the distance between lines, for 90 deg lines this becomes x.

Dash: Defines a noncontinuous line using the same system as linetype definitions: positive for a dash, negative for a space, and 0 for a dot.