There are several distinct right mouse button options to this function, so be sure to choose which you want before selecting an edge.

Split Edge at Selection: Set as the default option, it splits an edge into two pieces at the selection location, unless the selected edge is a full circle or ellipse. If it is a full circle or ellipse, both start and end endpoints are created at the selection location.

Split Edges at Point: Select a point, and all edges, which pass through the selected point, are split there.

Split Edge at All Points: Select an edge and it is split at all points that it passes through and that have a coincident constraint to it.

Split Edge into n Equal Segments: Set the value n in the edit box and then select the edge which you want to Split.

Variable Text

The Split toolbox has variable text, depending on which Split right mouse button option you select. Moreover, the n= number edit box only appears when the Split Edge into n Equal Segments option has been selected.

Note that a value up to 100 is allowed for n. If you attempt to set the value to more than 100 the prevously-set value is retained.