[Trigger] Need Tutor About Degree

[Arusar]

Need Help About Degree

Hi I'm Newbie here

i want to ask about degree in GUI trigger

• Flurry
• Events
• Unit - A unit Begins casting an ability
• Conditions
• (Ability being cast) Equal to Flurry
• Actions
• Set F_Archer = (Triggering unit)
• Trigger - Turn on FlurryReg <gen>
• Animation - Change F_Archer's animation speed to 200.00% of its original speed
• Unit - Pause F_Archer
• For each (Integer A) from 1 to 20, do (Actions)
• Loop - Actions
• Wait 0.01 seconds
• Unit - Create 1 arow effect for (Owner of F_Archer) at (Position of F_Archer) facing (Facing of F_Archer) degrees
• Unit - Order (Last created unit) to Move To (Center of Region 002 <gen>)
• Unit - Move F_Archer instantly to (Position of F_Archer), facing ((Facing of F_Archer) + 18.00) degrees
• Animation - Play F_Archer's attack animation
• -------- Line removed due to taking up too much space --------
• Animation - Change F_Archer's animation speed to 100.00% of its original speed
• Unit - Unpause F_Archer
• Selection - Select F_Archer for (Owner of F_Archer)
• Set ArrowEffect[(Integer A)] = (Units of type arow effect)
• Trigger - Turn off FlurryReg <gen>
• Wait 0.50 seconds
• Unit Group - Pick every unit in ArrowEffect[(Integer A)] and do (Unit - Remove (Picked unit) from the game)

what is "facing ((Facing of F_Archer) + 18.00) degrees" mean
explain to me please..

with pict if u can..

thanks b4