Finds and returns an edge in a graph given two items.
capi
find-graph-edge graph from to => edge
| graph⇩ | 
A graph-pane. | 
| from⇩ | 
An item in graph. | 
| to⇩ | 
An item in graph. | 
| edge | 
A graph edge, or  nil. | 
The generic function find-graph-edge finds the edge in graph that goes from the node corresponding to from to the node corresponding to to.
If there is no such edge, find-graph-edge returns nil.
CAPI User Guide and Reference Manual (Windows version) - 18 Feb 2025 15:35:34