Simple trigger question

Whats the new equivelant to preserve trigger in the wc3 trigger editor?

And if I did simply have it like something like this

event: map inicialized

condition: always (well you leave it blank always, same thing)

effect: Creat one ghoul at location 1
preserve trigger (well you get the point)

would that creat an infinite amount of footmen?

And is there anyway to keep "event" blank so its just always?

E: Every 5 seconds
A: Create 1 ghoul at Locationsarefunyay

triggers are auto preserved, there is no action needed (to not preserve, u must turn the trigger off with an action)