###########################
Cheatsheet of User Controls
###########################

+------------------------+---------------------------------------------------------------------------------+
| Key(s)                 | Operation                                                                       |
+========================+=================================================================================+
| :kbd:`Ctrl` + :kbd:`O` | **Open** (load) a video for processing                                          |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`Ctrl` + :kbd:`Q` | **Quit** the application                                                        |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`Esc`             | **Stop** processing a video or a calibration                                    |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`P`               | **Pause**/Resume video processing                                               |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`Space`           | **Clear** current trace                                                         |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`Down Arrow`      | **Next** figure                                                                 |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`Left Arrow`      | Rotate AR sphere **counterclockwise** (stunt figure rotates **left** wrt pilot) |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`Right Arrow`     | Rotate AR sphere **clockwise** (stunt figure rotates **right** wrt pilot)       |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`W`               | Move AR sphere **forward** (away from camera)                                   |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`A`               | Move AR sphere **left**                                                         |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`S`               | Move AR sphere **backward** (toward camera)                                     |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`D`               | Move AR sphere **right**                                                        |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`X`               | **Reset** AR sphere center to origin                                            |
+------------------------+---------------------------------------------------------------------------------+
| :kbd:`C`               | **Relocate** Camera                                                             |
+------------------------+---------------------------------------------------------------------------------+