Appendix C. Documentation Updates
Xcode automatically downloads and installs documentation updates in the background. In addition, you can control the installed documentation sets and check for updates manually. This is controlled through the Documentation preferences panel.
Setting Documentation Preferences
To open the Documentation preferences panel, choose Xcode > Preferences from the main menu, then select the Documentation tab. Figure C.1 shows the preferences.
Xcode downloads only what it considers “necessary” documentation sets at first. If you want missing libraries (the ones that are grayed ...