Make a series of spiral copies, such as creating a spiral stair. Spiral Copy consists of two consecutive transformations: first, rotate the selection around the defined rotation axis, and then translate the copy along the same rotation axis (called Forward).Four steps:1. Define the point at one end of the "axis", and select the "..."

Fillet, chamfer, extend, and connect coplanar lines.Fillet: Creates a radius that connects lines tangent to an arc.Chamfer: Creates a line of the desired length to connect the lines (perpendicular to the miter angle).Extend: Extends or trims lines to connect at intersections.Connect: Create one to connect two pick lines