Film Role Project. (Script Supervisor)

A script supervisor (also called Continuity Supervisor) is a member of a film crew responsible
 for maintaining the motion picture's internal continuity and for recording the production unit's daily progress in shooting the film's screenplay. The script supervisor credit typically appears in the closing credits of a motion picture. This happens pre-production, there is no formal form of education required to be able to perform this job. Some film schools offer a course to learn the basic skills required for being a Script Supervisor. The average salary for script supervisors is a $47,000 a year. Equipment needed for this job is an advanced computer with specific hard wear designed to do this job, along with cables and various cords to carry our all necessary functions.
This is an example of part of a script that the Script Supervisor has edited so it could be acted out and recorded on camera.
The link above is a storie written by Julie Ann Robinson who is a Script Supervisor, This story gives a better insight of the daily life of this particular job, and how difficult it can be at first.