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 for individual lines in the properties dialog box.
Use triple stitch for heavy markout or as heavy joining lines between sections of a character or SuperDesign.
Length
Set the Length of Triple stitch from 1 to 12mm in steps of 0.1mm.
The initial setting is 2mm.