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+A `frequently asked question' is that for possibilites to produce
+shaded boxes.
+
+Since the answers usually (just as recently) point either to PostScript
+\special's and PiCTeX it seems that a `simpler' and easier to use version
+is not readily available --- though I did not check this.
+
+A small and simple approach to shaded boxes is the use of a special font
+providing shaded rectangles, and some macros which automatically compose the
+desired box from these characters.
+
+Since, of course, the finest shading can be achieved by using single pixels
+for the pattern, the best shading pattern is *device dependent*.
+Furthermore, one generally defined shading pattern would imply the danger,
+that - because of rounding errors - at the boundaries (between two of the
+characters) `lines' would occur, and that the pattern would not look completely
+uniform. Consequently, since different fonts are to be used for different
+printers, the dvi file is *device dependent* in this sense, too, though the
+code - both for the macros and for the metafont description - is device
+independent.