The documentation for LEADER in the DXF specification is reasonably comprehensive see the section below. ![]() The "classic" LEADER entity has been part of AutoCAD since the early days, and shares a lot in common with the DIMENSION entity, including a common styling infrastructure (DIMSTYLE and the override system).Demystifying DXF: LEADER and MULTILEADER implementation notesĪs part of my work on the DXF driver in the open-source Geospatial Data Abstraction Library ( GDAL), I was tasked with the job of implementing support for leader elements.įor those unfamiliar with CAD, leaders are essentially arrows emanating from a text label or symbol, serving to point out some important aspect of the drawing.ĪutoCAD offers two different kinds of leader objects:
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