[3] Adobe Type 1 Font Format - T1_SPEC.pdf, 2021-02-18T01:31:12.000Z, 2022-09-30T08:11:50.238Z https://adobe-type-tools.github.io/font-tech-notes/pdfs/T1_SPEC.pdf

[4] Type 1 Font Format Supplement - 5015.Type1_Supp.pdf, 2021-02-18T01:31:12.000Z, 2022-09-30T08:13:00.160Z https://adobe-type-tools.github.io/font-tech-notes/pdfs/5015.Type1_Supp.pdf

[1] tn5049: The StemSnap Hint Operator for Type 1 Font Programs - 5049.StemSnap.pdf, 2021-02-18T01:31:12.000Z, 2022-09-30T07:58:37.667Z https://adobe-type-tools.github.io/font-tech-notes/pdfs/5049.StemSnap.pdf

[2] Designing Multiple Master Typefaces - 5091.Design_MM_Fonts.pdf, 2021-02-18T01:31:12.000Z, 2022-09-30T08:02:51.461Z https://adobe-type-tools.github.io/font-tech-notes/pdfs/5091.Design_MM_Fonts.pdf