Ribbon: Topology 
		  Tool: Extrude
		  
		   Extrude nodes, surfaces or lines along their normal, a vector, or another line.
		  
		    Select "Mesh" from the guidebar to extrude elems or to generate a mesh for extruded geometry.
			Activate the Guides selector to extrude along selected guiding lines. 
		  
 
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