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In this case, Pattern 1 is the dashed line and Pattern 2 is the unbroken line.
To edit a Pattern line, you can change its Origin Point manually, or click the 3-dot icon to select an origin on-screen. You can set the Angle and Offset values the same way. If you click Specify Angles and Offset by Vector, you can define two vectors on-screen: the first defines the angle of the line, and the second defines the spacing between repeating lines.
Highlight Pattern 1 (the dashed line), and you can see that it consists of four patterns.
Dashes are always defined in pairs; odd numbers represent the line segments and the even numbers represent the dashes. The length value for dashes is always negative.
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