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Need for Printed Axes

A graph needs printed axes, so you can orient yourself. For a do-once project, it may be reasonable to draw the axes by hand using Emacs's Picture mode; but a graph drawing function may be used more than once.

For this reason, I have written enhancements to the basic  print-graph-body function that automatically print labels for the horizontal and vertical axes. Since the label printing functions do not contain much new material, I have placed their description in an appendix. See section A Graph with Labelled Axes.

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