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With option /CURSOR, SUPPORT calls the interactive cursor to define the polygon summits. Type any key to go to next summit, D to correct the last one and type E to end the polygon definition. The last polygon side will then appear. The polygon definition may be aborted by typing Q. For graphical displays, you may use the mouse buttons for the commands. The left mouse button draws a vertex, the middle mouse button deletes the last vertex, and the right mouse button ends the polygon definition.
The resulting support is available in the Sic structure SUPPORT:
- SUPPORT%NXY [Integer] Number of summits - SUPPORT%X [Double] X coordinates - SUPPORT%Y [Double] Y coordinates