PODD is based on the paper templates for the Pragmatic Organisation Dynamic Display (PODD) communication book. It parallels the one-page PODDs with expanded functions. The grid set development has been checked, modified and amended at every step by Gayle Porter, the creator of PODD. The preschool grid sets include a “kindergarten” or “nursery” section to support participation in play based educational settings (e.g. preschool, kindergarten, day care, crèche).