Из
http://www.edaboard.com/viewtopic.php?t=67243First open specctra design file and then:
1. Define top layer as jumper layer
---(layer TOP(type jumper)----
2. Define jumper length
---(jumper (length 400))--- Insert this row just before PADSTACK section
And you have autorouting with jumpers.
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More details:
1.Open specctra design file in notepad
2. Press control+F( find ), type padstack
3.Insert "(jumper (length 400))" a row before padstack section begin.
That will told specctra, which jumper length to use.
I hope this helps. You can choose differnet jumper lengths and you can have more than one jumper defined.