735 ILCS 5/5-101
In all actions in any court on official bonds for the use of any person, actions on the bonds of executors, administrators or guardians, qui tam actions, actions on a penal statute, and in all civil actions, where the plaintiff, or person for whose use an action is to be commenced, is not a resident of this State, the plaintiff, or person for whose use the action is to be commenced, shall, before he or she institutes such action, file, or cause to be filed, with the clerk of the court in which the action is to be commenced, security for costs, substantially in the following form:
A B v. C D(Title of court.)
I, (E.F.) enter myself security for all costs which may accrue in the above entitled action.
Dated this .... day of ...., .....
(Signed) E.F.
735 ILCS 5/5-101