Gnuplot Output Enhanced Symbols

http://gnuplot.sourceforge.net/demo/enhancedtext.html

 

http://gnuplot.sourceforge.net/docs_4.2/node411.html

 

Gnuplot: bar above letter

It is easy. read the last link above.

 

Gnuplot: check above letter

set ylabel "{/=28 ~{/CMMI10=34 \022}{1{/CMR10=48 \024}}@^{VS^A}_{12}}"

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