What is the function of a chain pocket-tab in stage production?

The function of a chain pocket-tab in stage production is to weigh down a cloth for stability. When large pieces of fabric, such as curtains or backdrops, are used in a theatrical setting, it’s important to ensure they hang straight and do not sway or billow inappropriately due to air movement or lighting conditions. A chain pocket-tab typically contains a chain that adds weight to the bottom of the fabric. This extra weight helps keep the fabric taut and stable, contributing to a polished and professional appearance on stage.

The other options do not align with the role of a chain pocket-tab. For instance, while stage curtains are often kept open using various mechanisms, a chain pocket-tab is not specifically designed for that purpose. Additionally, assisting in rigging lighting equipment usually involves different hardware and techniques that are unrelated to the chain pocket-tab’s weight-bearing function. Finally, while storing small props safely is an important part of stage management, it does not pertain to the physical properties or uses of a chain pocket-tab.