Here’s something I just learned and want to share with others and record for my use the next time I need to do this and have already forgotten!
The position and appearance of the figure legend in Maxima plots drawn with plot() (by setting gnuplot_preamble) and in draw() (by setting user_preamble), can be manipulated to any of the gnuplot options listed here.
Here are some examples:
The MaximaList 
May 2021 – I cannot get this to work because the font for legend ‘sine’ displays as too tiny to read, although in the right place on plot. Using ‘new’ wxMaxima v 21 – wish I had not ‘upgraded’ at all … jrc
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