'Seize' is the verb used on the program so I used it. From www.dictionary.com (http://dictionary.reference.com/search?q=seize), the intransitive definition:

v. intr.
1. To lay sudden or forcible hold of.
2.
1. To cohere or fuse with another part as a result of high pressure or temperature and restrict or prevent further motion or flow.
2. To come to a halt: The talks seized up and were rescheduled.
3. To exhibit symptoms of seizure activity, usually with convulsions.

I have an idea Americans might object to the term 'proper English'.