A non-transitory computer-readable storage medium stores a set of program instructions including: (a) generating; (b) generating; (c) setting; and (d) displaying. The (a) generating generates a plurality of sets of print data corresponding to respective ones of a plurality of print labels used in an overlaid state. The (b) generating generates a plurality of sets of medium type information for respective ones of the plurality of print labels. Each medium type information indicates a type of a printing medium used for creating a corresponding print label. The (c) setting sets a layering order for the plurality of print labels. The (d) displaying displays a list of the plurality of sets of medium type information on a display. The plurality of sets of medium type information is arranged in the layering order for the plurality of print labels corresponding to respective ones of the plurality of sets of medium type information.