You can improve the accessibility by making audio debugging tools/etc. Julia could always use a contributor.
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Yes, audio is very important. The specification for tactile graphics is over 400 pages long but it seems it could be so much simpler by integrating audio (e.g., play audio description of a diagram’s feature when you point to it). Perhaps similar benefits could come from integrating audio with a braille display of source code, where the braille would be good at showing indentation and nesting of parentheses and the audio would be good at expanding contracted text.
Display pins made out of discarded paper are basically free, making some interesting applications that require a lot of display pins (e.g., editing Julia code) finally affordable. Using the code in appendix B of this essay (A New Type of Collage for the Blind), Julia and GLMakie generate the following scatter plot of refreshable braille display prices, showing each non-paper display pin in a typical refreshable braille display costs about $12.
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