When I played football the ball had to touch the line so if taking a corner it would basically be sitting ‘on’ the middle of the line because that’s where it touched; otherwise everyone would be in uproar. Every one of todays corners would need to be retaken.

Likewise for goals on tv it would be can you see a hint of grass it’s in.
So has it been since goal line technology came in and what do he laws actually say about sidelines and goal lines.
Just interested