Password translation:
Code elements: 0123456789
0 Unknown
1-6 Percentage of Lemmings saved in previous level
7-8 Game level
9 Checksum
The checksum character is found using this equation (where code(N) is the ASCII value of the character at position N): code(9) = 74 + (sum(code(0)..code(8)) modulus 16)
