Also called Continuity. The Script Supervisor makes certain that what is in the script gets put on film. This means that if the director decides on set that the line should change from "You vicious, cold, bloodsucking monster!" to "You cold, pointless, bloodsucking monster!", the Script Supervisor makes a note of that change. The Script Supervisor also looks for continuity errors, such as when the actor had the limp in the right leg and is now limping on his left. The Script Supervisor's line is: "That bracelet was on the other wrist." Or, "We changed that line last time."