Coloured Lines
Most early bingo's made no distinction on how an in-line scoring win was achieved.
When colored lines were added, though, it became more important how the in-line score was formed on the card. For example, 3-in-line on a red line could be worth more that 3-in-line on a yellow line.
On many games where you could rearrange the numbers/sections, the colored lines/sections scored independently, so you could often get a 3-in-line in yellow, then rearrange to score a 3-in-line in red using the same numbers and get paid for both wins!
BINGOS - FOR AMUSEMENT ONLY