Comment 2 for bug 564428

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su_v (suv-lp) wrote : Re: Middle marker wrong direction

The markers created and rendered by Inkscape follow the SVG 1.1 specification:

1) The Inkscape stock markers have the orientation 'auto'
   <http://www.w3.org/TR/SVG11/painting.html#OrientAttribute>

2) Markers are positioned at nodes, not in the middle of segments:
   «'marker-mid' defines the arrowhead or polymarker that shall be drawn at every other vertex (i.e., every vertex except the first and last).»
   <http://www.w3.org/TR/SVG11/painting.html#MarkerProperties>

see also markers in the SVG test suite:
<http://www.w3.org/Graphics/SVG/Test/20061213/htmlObjectHarness/full-painting-marker-01-f.html>