Drag segments and bends of the edges and observe the different characteristics.
Edge Types
Red edge: Orthogonal edge editing is disabled. The segments are straight lines
with arbitrary slope. Dragging an unselected segment creates a new bend.
Green edge: Orthogonal edge editing is enabled. While dragging, all segments
stay orthogonal and new bends are created as needed.
Purple edge: Same behavior as the green edge. In addition, the locations of the
source port and target port are constraint to the given port candidates of the nodes.
Orange edge: Same behavior as the green edge. In addition, the source port and
the target port can be placed at any location inside the node since they use dynamic
port candidates.
Yellow edge: Same behavior as the green edge. In addition, dragging the first
(or last) segment of the edge will create only one new bend instead of two.
Blue edge: Orthogonal edge editing is enabled for the inner segments, but the
first and the last segment can have an arbitrary slope. If a new bend is added to one of
these two segments, the newly created inner segment becomes orthogonal immediately.