(module hw4-teachpack mzscheme
  (require (lib "image-combine.ss" "utils-for-2010" "image1")
	   (lib "colors.ss" "utils-for-2010" "image3"))

  (provide image-width
	   image-height
	   image+
	   offset-image+
	   offset-masked-image+

	   solid-box
	   outline-box
	   solid-dot
	   outline-dot

	   (struct color (red green blue))
	   image->color-list
	   color-list->image))