| creates a dual-arm spiral
|}
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[[File:25_spiral_tn.jpg]]
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The X, Y, Z LCS coordinates originate at the center of the spiral.
<table>
<td>
[[Image:resize_sprial_new.png|thumb|left|550px|The geometry of the spiral curve object.]]
</td>
</tr>
</table>
<table>
<tr>
<td>
[[Image:23_parabola_tn_new.png|thumb|left|400px|Drawing a half-parabola.]]
</td>
</tr>