The ^13 is for the paragraph mark when using Wild Card option.

Use a different style for the second line. If I used Heading 1 for the first, I would use Heading 2 for the second. Again, these styles can be modified to look the way you want.

The \ is a special character that means I really want to search for the next character even though it otherwise would mean something else in a wildcard search.
The asterisk means any series of characters. If you wanted to actually search for an asterisk, you would use \*.

So, you would search for:
\\---

Finding and replacing characters using wildcards
Replace using wildcards
Using wildcards

Wildcard use is a bit arcane. I am finally getting a slight grasp of it.