Triple stitch 
is a row of small three-part stitches, each composed of one stitch going forward, one going backward then one going forward. The stitch length can be changed from 1mm to 12mm.
Use triple stitch for heavy markout or as heavy joining lines between sections of a design.
Length
Set the Length of Triple stitch from 1 to 12mm in steps of 0.1mm.
The initial setting is 2mm.
Set the line as an open line or a closed line (a shape).
Use Closed Border to change an open line to a closed one, or vice versa. This allows you to create a fill area with a closed or open border (a border that runs all the way around a fill area, or only part of the way).
Insert Color Change
Insert a color change between a border line and the enclosed fill area. The Color Selection dialog is displayed.
Insert Color Change is only used when the line forms the border to a fill area.