| # | Meaning |
|---|---|
| -1 | Application slot |
| 0 | System Heap |
| 1 | RMA |
| 2 | Screen Area |
| 3 | Sprite Area |
| 4 | Font Cache |
| 5 | RAM Filing System |
| 6 | Free pool1 |
| 7 | VRAM rescue2 |
| 8 | Kernel buffers2 |
| 256+ | User dynamic area |
1 Available from RISC OS 3.60 onwards
2 Available from RISC OS 3.80 onwards