9 of the Worldâs Deadliest Snakes. 1  9A dangerous African snake named for its black mouth. 2  8The barba amarilla (âyellow chinâ) of Latin America. 3  7One of the most dangerous snakes in Africa.  6The quintessential Australian 1  cobra. 5The killer of the most people.  4A dangerous snake with a triangular-shaped cross section.
The purpose of the Command key is to allow the user to enter keyboard commands in applications and in the system. The Macintosh Human Interface Guidelines have always recommended that developers use the Command key (and not the Control or Option keys) for this purpose.
How do I use the Fn key/F Lock key/Alternate command keys? Keys with an Fn key or F Lock provide two sets of commands for many keys. This includes the top row of standard function keys (F1âF12). Standard commands are labeled on the front of the keys (such as F3).