What are these symbols next to "merge mode by recursive" in git merge?

Question

When I use git pull [project name] master to update my core files, I get a bunch of green plus and red minus signals under "merge made by recursive." What are these symbols and what do they mean?

Here's a screenshot:

Thank you for your help.

Answer 1

That is an approximation of how many lines have changed. Pluses are for new content and minuses are for what was taken out. Modifications end up with equal amount of both. Deletions are only minuses and new files are all pluses.

Hope this helps!