2011

If you select three or more edges that converge at a vertex to form the corner
of a box, FILLET computes a vertex blend that is part of a sphere if the three
incident fillets have the same radii.
Chain
Changes from selection of single edges to selection of sequential tangent edges,
called a chain selection.
Edge Chain Selects a tangential sequence of edges when you select a single
edge. For example, if you select an edge on the top of a 3D solid box, FILLET
also selects the other tangential edges on the top.
Edge Switches to a single-edge selection mode.
Radius
Defines the radius of the rounded edge.
Undo
Reverses the previous action in the command.
Polyline
Inserts fillet arcs at each vertex of a 2D polyline where two line segments meet.
Select 2D polyline:
If one arc segment separates two line segments that converge as they approach
the arc segment, FILLET removes the arc segment and replaces it with a fillet
arc.
FILLET | 803