The document is a list of techniques used in digital design by Haoyang Wu including cropping, layers, brightness/levels adjustments, color corrections, black and white conversions, filters, image rotations, dodging and burning, saturation adjustments, text tools, vignetting, gradients, combining images with the pen tool, transposing images using opacity, spot healing, lasso tools, magic wand, clone stamp, clipping masks, and creating a final connotative combined image. It provides examples of different editing tools and techniques.