The medium (plural media) is both the tool (e.g. acrylics, gesso) and surface (e.g. canvas) an illustrator uses. Technique is the manner in which an artist applies one medium to another. There are many techniques for applying media: painterly (painting), drawing, sculptural, printmaking, photography, and digital. When an artist employs two or more techniques, they may refer to their process as mixed media. In the 1990s, illustrators were just beginning to explore with digital methods. The examples used in the slideshow are pioneering efforts of picture book illustration created digitally. Today it is common for illustrators to create an entire book digitally or perhaps start with traditional methods and finish digitally.