Mac-keys -

: Also labeled as Alt , this key is used for secondary functions, typing special characters, or alternate commands.

Mac keyboards feature unique modifier keys that differ from Windows layouts: MAC-Keys

For those managing text on a Mac, these shortcuts streamline editing: Keyboard Shortcut Command + A Copy / Paste Command + C / Command + V Undo / Redo Command + Z / Shift + Command + Z Delete Full Word Option + Backspace Go to Start/End of Line Command + Left Arrow / Right Arrow Go to Start/End of Doc Command + Up Arrow / Down Arrow Show Dictionary Control + Command + D (hover over word) Specialized Function Keys : Also labeled as Alt , this key

: They ensure that messages sent between a client and a database server (like IBM Informix ) have not been tampered with. : Also labeled as Alt