The term 'computer keyboard key' refers to the various keys found on a computer keyboard. The ALT key is used to access alternate functions of other keys, such as special characters or symbols. The END key is used to move the cursor to the END of a line of text. The HOME key is used to move the cursor to the beginning of a line of text. The ENTER key is used to submit a command or ENTER a new line of text. Finally, the CTRL key is used to control various functions, such as copy and paste.