(BAR-3D upper-left-point lower-right-point depth top?)

Draws a solid 3-dimensional bar with outlets, using the current fill pattern and fill color for the front face, and current line width and color for outlet. Depth is the 3rd dimension, given in the X-dimension coordinate system. Top? is #T if a top should be drawn, and #F if not. #T and #F can be replaced by 1 and 0). This function is very useful for drawing bar charts.