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The Wireframe operation converts edges to tubes and points to spheres, creating the look of a wire frame structure in rendering.
Wireframe works only with polygons and/or particles as input.
Tips

Use the Poly Wire SOP to create more complex tube geometry from curves, with smoother bends and intersections than Wireframe, especially for Lsystems.

Use the Convert Line SOP to create a line segment for each edge in incoming polygons.

Use the Ends SOP set to Unwrap U to open each of the closed polygons into an open curve that includes the start and end points.
Parameters
Group
Subset of geometry to convert.
Wire Radius
Radius of individual wires used in construction.
Round Corners
Places spheres at locations of points.
EndCaps
Places endcaps on tube geometry.
Remove Polygons
Removes the original geometry.
See also 