Purpose of the \G anchor in regular expressions

Question

I simply don\'t understand what the \\G anchor does.

If I execute /\\G\\d\\d/ on 1122aa33, it will match 11 and

Answer 1

Reference link

It basically matches from the end of the "previous match", which on the first run of a regex is considered to be the beginning of the string.

In other words, if you ran /\G\d\d/ twice on your string 1122aa33, the second run would return a match on 22.