The computer keyboard is a familiar device to most people. It is used to type text and to issue commands to the computer. The keyboard also has a number of symbols that are not letters or numbers.

The most common symbol on the keyboard is the Enter key. This is used to issue commands to the computer and to move the cursor to the next line.

The Tab key is used to move the cursor to the next tab stop. This is usually used to indent text.

The Backspace key is used to delete the character to the left of …