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Docs » Autodocs » graphics.library » SetOPen 
 	SetOPen -- Change the Area OutLine pen and turn on Outlinemode for areafills.
 
 	SetOPen(rp, pen)void SetOPen( struct RastPort *, UBYTE );
 
 	This is implemented as a c-macro.Pen is the pen number that will be used to draw a border
 around an areafill during AreaEnd().
 
 	rp = pointer to RastPort structureAreaEnd(), <graphics/gfxmacros.h>, <graphics/rastport.h>pen = number  between 0-255
 
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