[1] Glyph Bitmap Distribution Format (BDF) Specification - 5005.BDF_Spec.pdf, 2/18/2021, 1:31:12 AM, 9/30/2022, 8:13:20 AM https://adobe-type-tools.github.io/font-tech-notes/pdfs/5005.BDF_Spec.pdf
[2] itouh: BDFについて, 2/13/2006, 1:40:56 AM, 8/5/2023, 7:33:07 AM http://hp.vector.co.jp/authors/VA013241/font/bdf.html
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