The appendix package provides various ways of formatting the titles of appendices. Also (sub)appendices environments are provided that can be used, for example, for per chapter/section appendices. The word 'Appendix' or similar can be prepended to the appendix number for article class documents. The word 'Appendices' or similar can be added to the table of contents before the appendices are listed. The word 'Appendices' or similar can be typeset as a \part-like heading (page) in the body. An appendices environment is provided which can be used instead of the \appendix command.
https://cdn.netbsd.org/pub/pkgsrc/current/pkgsrc/print/tex-appendix/DESCR
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