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(emacs-lisp-intro.info)Printed Axes

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Need for Printed Axes
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   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' 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.  Note: A Graph with Labelled Axes.