DISPLAY CONTROL APPARATUS, DISPLAY SYSTEM, DISPLAY METHOD, AND COMPUTER READABLE MEDIUM

A display control apparatus capable of finding the position of a working entity even when the site is not provided with an infrastructure is provided. A display control apparatus includes a position calculation unit and a display control unit. The position calculation unit calculates the position of each of a plurality of working entities relative to a reference point by using distance measurement result information indicating results of measurements of distances between a plurality of detection apparatuses. The display control unit performs control so that position information indicating the position of at least one working entities is displayed on a mask worn by a worker.