Disclosed is an assembly to hold the angular position of a display panel relative to the bag front to which it is pivotally attached. The display panel is attached to the bag so it can pivot flat against the bag front or away from the bag into the line of sight of the computer operator/bag wearer. The display back and bag front have holders meant to match the ends of a prop bar which extends between the two. There are three embodiments; 1) a rigid bar between the two holders, 2) a semi-rigid bar held pivotally with the first holder and the opposite bar end sliding through the second holder with friction to hold the display panel position, 3) a rigid bar held pivotally with a first holder having a hinge with friction to hold the display panel position and the opposite bar end sliding along the second holder.