The document discusses various methods for drawing and manipulating images programmatically in PHP, including: 1) Creating images with GD/imagecreate and setting properties like width/height, background color. 2) Common drawing functions - imageline(), imagerectangle(), imageellipse(), imagearc(), imagepolygon() - to add shapes to an image. 3) Filling shapes with imagefilledrectangle() and other filled functions. 4) Adding text to images with imagestring(). 5) Importing/editing existing images, copying/flipping parts of an image with imagecopy().