Question about a Trigger

Part of a trigger of spell effects in the tut section had this:

code:--------------------------------------------------------------------------------Spell Target
Events
Unit - A unit Is issued an order targeting an object (Generic Unit Event)
Conditions
(Unit-type of (Ordered unit)) Equal to Your_Caster_Type) (To make sure its the correct caster)
(Issued order) Equal to Human Mountain King - Storm Bolt (Choose the order your spell is based on)
Actions
Set spell_target = (Target unit of issued order) (Unit variable)

But I cant find where you find that "(Issued order) Equal to Human Mountain King - Storm Bolt (Choose the order your spell is based on)" could somone please inform a noob please :)

That should be a condition under "Order Comparison".