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All definitions of dashes, dots, and spaces are separated by commas:
Dash: The drawing elements are shown as positive figures, for instance 0.5 represents a dash ("pen down") with a length of 0.5 drawing units.
Dot: Dots are shown as 0 values.
Space: Spaces are shown as negative figures, for instance -0.25 represents the space ("pen up") in which no line should be drawn.
The length specifications represent drawing units when the LineScale factor is set to 1.00.
RichLine Styles
Add your own RichLine styles to definition file located at Default Files/RichLine Styles/rlstyles.mln.
TODO: RichLine styles defined in this file can then be loaded on runtime in options dialog via _RICHLINESTYLE command or within your custom module. RichLine styles are also loaded automatically into the drawing if they are set in _RICHLINE command but not loaded at that moment.