1) Arrests 2) Horns in on 3) Stops 1) Heckles 2) Interrupt 
an archaic spell type that resolves immediately, instead of with a batch of spells, under the original rules. all interrupts now have errata to function as instants. all references to interrupts now refer to instants. ...
An efficient method to quickly request a computer's attention to a particular external event. See also: Nonmaskable Interrupt.