From The Mana World
If the walkable area of your map can fit into an HxW area of tiles, the whole map will look like this:
20 | W | 20 | ||
20 | 20 | |||
H | H | |||
20 | 20 | |||
20 | W | 20 |
Key:
- Red
- Border should not have any walkable tiles
- Green
- Center should have all the walkable tiles