Functional: Intuitive Functional Programming Interface for LaTeX2 Copyright : 2022-2023 (c) Jianrui Lyu <tolvjr@163.com> CTAN Page : https://ctan.org/pkg/functional Repository: https://github.com/lvjr/functional Repository: https://bitbucket.org/lvjr/functional License : The LaTeX Project Public License 1.3c