Is "While" just for cosmetics ?

I don't get the use of While -

E.g.

{Event} a=b -> {Action} Add 1 to x

m>9

works the same as

{Event} while -> {Action} Add 1 to x

a=b

m>9

is while just for cosmetics or is there a deeper use i can't think of ?

It's a loop.

Loops must be completed before the next event is fired.

ok, thanks