title: In this quote from Bitbucket, what is the difference between "source" and "your update", and between "destination", and "original code"?
body: <p>I'm reading about resolving merge conflicts in Bitbucket here: <a href="https://confluence.atlassian.com/bitbucket/resolve-merge-conflicts-704414003.html" rel="nofollow noreferrer">https://confluence.atlassian.com/bitbucket/resolve-merge-conflicts-704414003.html</a>
  It says "When you create a pull request Bitbucket automatically compares the source with your update and the destination with the original code".</p>
  
  <p>My current understanding is that when you do a pull request, you're merging the 'source' into the 'destination'. I assumed that the 'source' is that same as 'your update' and that the 'destination' is the same as the 'original code'.</p>
  
  <p><strong>My question is:</strong> What is the difference between all these terms? Specifically, what's the difference between 'source' and 'your update', and what's the difference between 'destination' and 'original code'?</p>