Confused on symbol in for loop

This symbol I have highlighted wasn’t explained and I’m confused about this type of for loop this is the first time I’ve seen : separating two things in this course.

Untitled

That is introduced in the previous section in the lecture titled “Range-based For Loops”.

for (AActor* Actor: OverlappingActors)

This reads "for every actor in OverlappingActors" where Actor is the current iterated element.

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