| Value | Meaning |
|---|---|
| None0 | no shading |
| Fade1 | plain fading |
| FadeAndMoveUp2 | fade and move up |
| FadeAndMoveDown3 | fade and move down |
| FadeAndMoveLeft4 | fade and move left |
| FadeAndMoveRight5 | fade and move right |
| FadeAndMoveHorizOut6 | fade and move horizontally out |
| FadeAndMoveHorizIn7 | fade and move horizontally in |
| FadeAndMoveVertOut8 | fade and move vertically out |
| FadeAndMoveVertIn9 | fade and move vertically in |
Different types of supported background shading functions.