The default fonts used vary largely depending on the terminal setting (and local computer, e.g. what fonts are available, how the font subsystem is configured), and gnuplot doesn't really know what the default setting is, unless you set one explicitly for your terminal, e.g. in your .gnuplot / gnuplot.ini file.
I don't know what you mean by "giant", windows describes font sizes by numbers. Or do you have a font that's called "giant", which really isn't?
What terminal are you using? Please provide a gnuplot script and screenshot of the output, so one can compare.
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The default fonts used vary largely depending on the terminal setting (and local computer, e.g. what fonts are available, how the font subsystem is configured), and gnuplot doesn't really know what the default setting is, unless you set one explicitly for your terminal, e.g. in your .gnuplot / gnuplot.ini file.
I don't know what you mean by "giant", windows describes font sizes by numbers. Or do you have a font that's called "giant", which really isn't?
What terminal are you using? Please provide a gnuplot script and screenshot of the output, so one can compare.