pnm decoding and encoding
| ofs | hex dump | ascii |
|---|---|---|
| 0000 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 0020 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 0040 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ff ff ff ff 00 00 | ................................ |
| 0060 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff | ................................ |
| 0080 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 00a0 | 00 00 00 00 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 00c0 | 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ff ff 00 00 ff ff 00 00 ff ff ff ff ff ff ff ff | ................................ |
| 00e0 | ff ff 00 00 ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 00 00 00 00 | ................................ |
| 0100 | ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff | ................................ |
| 0120 | 00 00 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 00 00 ff ff 00 00 00 00 | ................................ |
| 0140 | 00 00 00 00 00 00 ff ff 00 00 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 | ................................ |
| 0160 | 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 | ................................ |
| 0180 | ff ff 00 00 ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 01a0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 01c0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 | ................................ |
| 01e0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff | ................................ |
| 0200 | ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 0220 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................................ |
| 0240 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ........................ |