Abstract: Watercolor effects are simulated in computer graphics by defining a brush shape and brush type, selecting a wetness level for the drawing area and, in accordance with the selected wetness level, causing the brush stroke to merely interpolate the brush color with the pre-existing color in the stroked area, create a texture effect of diminishing brush color, or create a smearing effect by interpolating the pre-existing color at a new brush position with that of the previous brush position before interpolating it with the brush color. Apparatus is also disclosed for selecting various brush attributes and brush color parameters.

Abstract: A combined visual directory and spreadsheet for graphic files is disclosed. Graphic files can be selectively associated with cells of a matrix. A selectable portion of the matrix containing miniaturized versions of the graphic files associated with the cells of that portion is displayed on an editing monitor. Graphic functions of various kinds can be assigned to displayed cells by the operator to produce modification, animation, or display of graphics associated with selected cells.