Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Hp. Hot Pressed, has a smooth surface; used for pencil and fine line drawings. Cp. Uold Pressed, has a finely grained surface; used for general pur poses and water-color drawing. R. Rough, has a coarsely grained surface; used for very bold drawing and sketching. In ordering specify the surface, hr, gp. Or R, and the size.