IFF

[Just Curious]

SECTION 30 INFIELD FLY RULE
Infield fly rule is, when declared by the umpire, a fair fly (not including a line drive or an attempted bunt) that can be caught by an infielder with ordinary effort when runners are on first and second or all three bases are occupied and before there are two outs in the inning. Any defensive player positioned in the infield at the time of the pitch shall be considered an infielder for the purposes of this rule. The rule does not preclude outfielders from being permitted to make the catch. The ball is live, the batter is out, which removes the force, but runners may advance at their own risk. The runners may tag up and advance as soon as the batted ball is touched by a fielder. If a declared infield fly becomes foul, it is treated as a foul ball, not an infield fly.

In the second to the last sentence "The runners may tag up and advance as soon as the batted ball is touched by a fielder." Does this mean that on a called IFF, whether the fly is dropped or caught, on the touch the batter is out and runners do not need to tag up at all? TIA