Eagle CAD

To turn polygons off, select ripup tool, ripup polygon, then write this command:

>set poly off

To turn them on, type this command:

>set poly on

 Hide GND unrouted airwire

> ratsnest ! GND

Unhide GND unrouted airwire

> ratsnest GND

Unhide a specific signal

> ratsnest <signal name>

Unhide all airwires

> ratsnest *