To create an Edge in the Main Menu select Model -> Add edge
There are 2 algorithms to create an Edge.
Firstly you can define an Edge through Point1 and Point2, which ares the points through wich the Edge passes.
Arguments: 2 vertices
The dialogue box for the creation of an edge from vertices is:
Add Edge from vertices
Secondly you can define an Edge through Point and Vector.
Arguments: vertex + vector
The dialogue box for the creation of an edge from a vertex and a vector is:
Add Edge from vertices
TUI command: Edges