The document discusses the history and techniques of stencil art. It introduces Blek Le Rat as the pioneer of stencil graffiti who began using stencils in Paris in 1981. British artist Banksy acknowledges Blek's influence on his own stencil style. Banksy became famous for his trademark stencil graffiti art in public spaces in cities like London and Bristol. The document provides some of Banksy's advice on spraying stencils and ideas for how to paint stencils discreetly.