I have 4 points as shown below, "A" connected to "B", and "C" connected to "D", and there is an air wire between "B" and "D", which eventually connects "A" to "C". However, I want to run the trace from "A" to "C". Eagle does not let me start a trace where there is no air wire. How do I go around that? How do I run the trace from "A" to "C"?
A========B
|
C========D
Thanks for your answer.