Many people have asked questions about customizing or creating user-defined arrow heads:
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but yEd doesn't support that.
I would like user-defined arrow heads, too.
Without user-defined arrow heads, yEd is limited to creating only diagram types that you, the designers, have anticipated. Then users have to ask the developers to create a new arrow head when they need one that wasn't anticipated. If yEd supported user-defined arrow heads, then people could use yEd to create diagram types that weren't previously anticipated, without having to ask the software developers to make a new arrow head for them.
Here is what I would like to see in yEd:
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The user can define shapes for new arrow heads. (Importing an SVG file is fine.)
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The arrow heads are scaleable, independent of line width. Perhaps the user draws the shape with zero-width lines, and the arrow head inherits the line width from the edge.
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The fill color is user-selectable at any time, not fixed to a color defined when the new arrow head is created.
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The line color works the way it does already, inherited from the edge.
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In addiion to the text label that edges currently have, it would be nice if the user could specifiy text for ends independently, for example, for indicating multiplicity.
