Misc. options:
Graphic effects when opening window: When windows open, a zooming effect similar to the Scale effect of the Dock is used. If this effect is turned off, windows will open instantly.
Show the Location Path of Current Desktop Picture on the Desktop: You can use this option to display on the Desktop, at center of the screen, the full path to the picture used as Desktop Background.
Remove the alert message on first opening applications downloaded from the Internet: At first opening of an application downloaded from the Internet, an alert message appears. This message gives miscellaneous information on the source of the downloaded file, and you can open the file.
You can use this option to show or hide this alert message.
Warning: Selecting this option presents a potential risk of security. Indeed, XProtect, the anti-malware system used by OS X, cannot check the downloaded files anymore.
Turn on Accent Picker from the keyboard: By default, you can enter accented characters while using the keyboard layout (as with an iPhone, iPad, or iPod Touch). Hold down the key to display a list of accent characters and select the one you want. You can use this option to turn on or turn off this function.
Dark menu bar in fullscreen mode: Some applications have a full screen mode that hides the menu bar. To make it appear, move the mouse pointer up on the edge of the screen.
Turning on this option allows you to show the menu bar with black background.
Speed of display of sheets: You can use this option to set the speed that a window's sheet is displayed. A "sheet" is a modal dialog which is attached to a window and asks for input from the user.
Mode of operation for CrashReporter: By default, when an application quits unexpectedly, an alert message appears that allows you to reopen the application and send a report to Apple. It's the basic mode of operation of OS X, but two other modes exist. The Developer mode displays an alert message with miscellaneous debug information. The Server mode, turned on by default in OS X Server, doesn’t display any message but stores the Crash reports in the Library/Logs/CrashReporter and Library/Logs/CrashReporter folder in your home folder.
Automatically check for updates: If the "Automatically check for updates" option is turned on in the System Preferences (Software Update), you can use this option to modify its frequency ("Every 7 days", by default).