How to review code in a pull request: read the diff, comment on a line, then approve or request changes

A colleague asks you to review a pull request. Where do you start? In AngusGit, open the diff on the review page, write a comment on a specific line or offer replacement code, then submit Approve, Request changes, or Comment. After the author updates the branch you can review again. If an approval still cannot merge, use the merge card to see why.