This is how a level file look:
1 5 3 Author: Anders Reggestad (andersr@pvv.ntnu.no) # # # # # # .+ .o x # # ~ .* . # # # # # #
First line: Version=1, Width=5, Height=3
Second line: Level info line.
Level ground data: '#' Wall '.' Floor 'x' Goal '~' Water
Level pices: '+' Smily 'o' Sphere '*' Dirt