What does [*]+ mean in Regex? [duplicate]

Question

I'm trying to work through the puzzles on regexcrossword.com and I'm finding that it's not clear in its instructions. My understanding of this expression is:

[]= any combination of the characters within the brackets

*= 0 or more of the preceding pattern

+= 1 or more of the preceding pattern

But, I don't see how there's a pattern to be followed at all. What am I missing here?

Answer 1

* means just that character when it is inside [] (+ would as well).

So [*]+ means one or more *s.