Arbortext IsoDraw > User's Reference > Palette Window Toolbox > Elements > Line > Converting the Element
  
Converting the Element
To convert polylines, use any of the following commands:
Element > Paths > Join polylines to convert an open polyline into a closed one.
Element > Convert > into Bézier parts to convert lines and polylines into a Bézier path.
Element > Convert > into elements to convert a polyline into individual, simple lines which are initially grouped together. You can edit the lines individually once they have been ungrouped by executing Element > Ungroup.
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A polyline is automatically converted into individual elements when you delete individual segments. Two polylines, two lines, or one line and one polyline appear depending on the length of the polyline and the segment that has been deleted.