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@Gordon, in your reply in the post #10, you said:

It should be possible to (very easily) clone fontall into fontkorean and use the utility to make a new font with just korean symbols in, but until we're sure everything works I'd rather not have too much duplication

Could you let me know how to run the fontconverter to create a new font file to include only ASCii and Korean? I have some experiences with other languages like Arduino, but I'm very new to JavaScript, so I have no idea where to start. I took a look at the github pages, but still no clue where/how to run. If there is an instruction or guide, please let me know the link.

Thanks.