<Hex>

<Hex> == <Value>

<Value> == 0 || 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || A || B || C || D || E || F

<Hex> is a hexadecimal number.

Hexadecimal numbers incorporate a range 0 to 15 an are represented by the numbers 0 to 9 and the letters A to F. As Traffic is mostly case independent (the only differences are some built-in track bed pictures), you can use lower case letters too.