The rooms can realign to zero position.

Clean sweep happens after they realign to zero position.

Clean sweep happens after they realign to zero position. - What?

And what’s the first thing the program does when the rooms realign to zero position?

And what's the first thing the program does when the rooms realign to zero position?

Global positioning has zeroed in...

Global positioning has zeroed in...

This building's position is zero.

With the current financial situation, this bank must hike a zero-tolerance position on non-payment.

Look: Here we have - from negative infinity to zero, And here, from zero to positive infinity.