### Autoroute Parameter

Here you can define the layers which may be used by the autorouter, the preferred direction for traces on each layer, and if vias may be inserted by the autorouter.

You can also define, if before autorouting a fanout pass and after autorouting a postroute pass for reducing the via count and the cumulative trace length should run.

The postroute pass may take a very long time and can be stopped by clicking the left mouse button.

In a fanout pass the connections will be routed only till the first via. That may be useful on boards with many layers and ball grid arrrays.

The detail parameter button opens a window, where you can adjust the individual costs used in the autoroute algorithm.

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