2024-06-15

• Update manuals based on TeX Live 2024 status.

2023-09-02

• More description on pTeX and upTeX latest versions.

2023-02-25

• Update manuals based on TeX Live 2023 status.

2022-04-05

• Update manuals based on TeX Live 2022 status.

2021-08-04

• Mention TL2021 additions in e-pTeX manual.

2020-12-13

• Mention the new documentation japanese.pdf available in babel-japanese.

2020-03-21

• Mention new primitives available in TeX Live 2020.
• Add short instructions for JFM-related utilities (in Japanese).

2019-11-26

• More description in the English guide to pTeX and friends (ptex-guide-en.pdf).

2019-10-19

• Add ptex-guide-en.pdf; This is an English guide of pTeX and friends, for developers not interested in Japanese.
• ptex-manual.pdf, eptexdoc.pdf, jfm.pdf: More documentation.