<!-- nodeReference := SVG_Define_marker ( svgObject ; ID ; x ; y ; width ; height ; orient ; markerUnits )
 -> svgObject (Text)
 -> ID (Text)
 -> x (Real) - refX
 -> y (Real) - refYters>=6)
 -> width (Real) - markerWidth
 -> height (Real) - markerHeight
 -> orient (Real) - orient
 -> markerUnits (Text)
 <- nodeReference (Text)-->
## Description
 **SVG\_Define\_marker** ( parentSVGObject ; id {; x ; y {; width ; height {; orientation}}} ) -&gt; Function result 
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