Software 
OS X: Activity Monitor shows one CPU Usage graph on systems with more than four cores
In Activity Monitor, the CPU Usage and history show a separate graph for each core if the Mac has four processor cores or less, but a single graph if there are more than four cores.
Mac OS X displays inverted image colors (white on black, reverse type)
Your computer may display a reverse image if certain keys are pressed at the same time. Depending on your configuration, it may be black and white or inverted color, as shown below.
Set the default email app and web browser on your Mac
When you click a link for an email address or a website, your Mac opens the app you’ve set for that kind of link.
Create a bootable installer for OS X Mavericks or Yosemite
With OS X Mavericks and Yosemite, you can create a bootable OS X installer which can be used to install the operating system while started from removable media, such as a USB flash drive.
Safari web settings on your iPhone, iPad, or iPod touch
By default, Safari shows certain web features such as movies, animation, and web applications. You might want to turn off some of these features to help protect your privacy and your device from possible security risks on the Internet.
Use S/MIME to send encrypted messages in an Exchange environment in iOS
iOS offers support for S/MIME so that you can send encrypted email messages.
iPhoto ’08, iPhoto ’09 und Aperture: Vorgehensweise, wenn bei Fotoproduktbestellungen eine Warnung über zu niedrige Auflösung angezeigt wird
Dieser Artikel erklärt, wie vorzugehen ist, wenn bei Fotoproduktbestellungen in Photo '08, iPhoto '09 oder Aperture eine Warnung über zu niedrige Auflösung angezeigt wird.
