Mixed media is a form of art which combines at least two different types of media. Mainly developed by artists in the 20th century such as Arman, Georges Braque or Picasso, mixed media art requires mastering various artistic techniques such as collage. Although collage and painting is usually that come to mind when speaking of mixed media, other techniques fields are commonly used by artist. Mixed media painting techniques are quite diverse; for example the term glazing is used to describe layering transparent colors. Wax resist is a term used when rubbing a white wax crayon on a surface before painting; it is used to create highlights in different areas of the artwork. Mixed media is to be differentiated from multimedia art, which combines visual art and non-visual elements. Mixed media collage refers to the art fundamental which implies that art can be made of anything or any combination of things.