Sentence:  It was for this reason , and no other that I can see , that in September 1912 , Braque took the radical and revolutionary step of pasting actual pieces of imitation woodgrain wallpaper to a drawing on paper , instead of trying to simulate its texture in <WSD>paint</WSD> . 
Meaning of the word marked with <WSD> tags:  a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating