title: Issue Links meaning in JIRA
body: <p>After checking the Atlassian documentation about the kind of links of JIRA's issues (<a href="https://confluence.atlassian.com/display/JIRA/Linking+Issues" rel="nofollow">https://confluence.atlassian.com/display/JIRA/Linking+Issues</a>)</p>
  
  <p>I couldn't figure out the difference between: "depends on" and "precedes". Does anybody know the difference among them? </p>