This Dynamic Component is for drawing centre lines with a repeating pattern of short lines and long lines. Line Length can be set in Component Options or by using the Scale tool. Long Dash Length is the percentage of the Pattern Length taken up by the long dash. 70-90% works quite well for a centre line. Pattern Length is the period of the pattern (distance until it repeats).This sets the scale of the pattern. If you set it too large in relation to the Line Length, it will be scaled down.