Another

[Just Curious]

I had the opportunity to call on a short old gym floor that used a division line and a parallel line on both sides of the division line at about 10 ft. off of the division line.
I had received a couple of explanations as to how to use this system and was wondering what the resident experts thought?
My thought was that when team A is bringing the ball from BC to FC, they would cross all three lines to give them the full length of a normal BC and as soon as the crossed the third line, they could back up to the third line behind them to give them a full FC...
I was told that this was incorrect..