In AutoCAD you can use keyboard keys F1 to F12 to access helpful functions.
|F1||Help function; opens for active tool tip|
|F2||Displays command history (expanded history)|
|F3||Turn object snapping on or off|
|F4||Turn on 3D object snaps|
|F5||Cycle through isoplane settings|
|F6||Aligns user coordinate system with planar surfaces|
|F7||Display or hide grid|
|F8||Lock cursor movement to either horizontal or vertical axis|
|F9||Set cursor movement to be restricted to defined grid intervals|
|F10||Polar tracking; restrict cursor movement along specified angle|
|F11||Object snap tracking; align cursor with object snap locations|
|F12||Display distances and angles that are near cursor|
Below are some examples for above AutoCAD functions.