Apple keyboards have four arrow keys: an Up Arrow, Down Arrow, Left Arrow, and
Right Arrow.

← ↑ → ↓ Arrow Keys

Arrow keys are commonly used to navigate around within documents and for
playing games. Before the use of the computer mouse was widespread, arrow keys
were the primary way of moving a cursor on screen.

Arrows can also be used to move through a list of files or folders. They can be used
alone or in combination with other keys.