Unveil hidden macOS (OS X) features
Mr.W 
The latest version of Pixelmator includes some improvements for stability issues with Pixelmator on certain 2011 Macs that have Intel HD 3000 graphics cards and OS X 10.11 El Capitan preinstalled.
Thanks to the fix, the app works again on these Macs. Unfortunately there is bad news for all other users, the bugfix made the photo editing application slower. Good news, you can disable the bugfix using the following Terminal command.
Twitter has recently started using a shortened URL service called t.co, resulting in a slow connection and sometimes it will not open. This can be disabled in Tweetbot for Mac, use the following command in Terminal to change this:
Mission Control gives you access to all your open windows and desktops (spaces). The spaces are automatically sorted by recent use, you can undo this.Use the following command in Terminal to change this.
The Mac App Store has a debug menu just like the most standard Apple applications in OS X. From this menu you can access various of other options such as deleting cookies or the quick search for updates. Close the Mac App Store app and use the following command in Terminal to enable the debug menu.
When an application crashes in OS X you get a warning and a crash report on your desktop. The warning is displayed as a pop-up in the middle of the screen. This is convenient, but it could be better. It’s possible to get a crash notification in the Notification Center. Use the following command in Terminal to change this:
Most improvements in OS X 10:11 El Capitan are not immediately visible to the ordinary OS X user. Especially under the hood many improvements have been made in the area of performance and safety.
Do you want OS X 10:11 El Capitan faster than you can use the OS X Terminal Commands 10 below. The commands disable various delays from that standard built by Apple.
By default, screenshots (cmd⌘ + shift⇧ + 3) are saved on your desktop along with the date and time they were taken. It’s possible to to remove the date and time stamp from the file names of screenshots, use the following command in Terminal: