Double-click the frameMC symbol to edit it and draw a rectangle on the stage, with line color light gray, line thickness 1.0 and no fill color. DonΓÇÖt worry about the dimensions or placement of the rectangle; weΓÇÖll set them with set values. Select the whole rectangle. In the Info Panel, set both x and y to 0, enter 399 into the w field and 199 into the h field (the dimensions of the stage -1). Keep the rectangle selected and convert it to a graphic symbol. Call it framesy.