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-LaTeX3 Programming Conventions
-==============================
-
-Release 2024-03-14
-
-Overview
---------
-
-The files of the `l3kernel` bundle provide an API for TeX programmers
-with defined syntax conventions, completely separating it from document level
-syntax. Hence, the commands provided are not intended for use at the document
-level nor for use in describing design layouts in document class files.
-
-This API provides the foundation on which new additions to the LaTeX kernel and
-other advanced extensions are built. The programming layer is designed to be
-loaded as part of LaTeX2e format building or as a loaded package with plain TeX
-or other formats.
-
-The syntax and functionality provided by `l3kernel` is regarded by the LaTeX
-team as stable. There may still be changes to some functions, but these will be
-very minor when compared to the scope of `l3kernel`. In particular, no functions
-will be removed, although some may be deprecated.
-
-
-Requirements
-------------
-
-The `l3kernel` bundle requires the e-TeX extensions and a number of additional
-'utility' primitives, almost all of which were first added to pdfTeX. In
-particular, the functionality equivalent to the following pdfTeX primitives must
-be available
-
-- `\ifincsname`
-- `\ifpdfprimitive`
-- `\pdfcreationdate`
-- `\pdfelapsedtime`
-- `\pdffiledump`
-- `\pdffilemoddate`
-- `\pdffilesize`
-- `\pdflastxpos`
-- `\pdflastypos`
-- `\pdfmdfivesum`
-- `\pdfnormaldeviate`
-- `\pdfpageheight`
-- `\pdfpagewidth`
-- `\pdfprimitive`
-- `\pdfrandomseed`
-- `\pdfresettimer`
-- `\pdfsavepos`
-- `\pdfsetrandomseed`
-- `\pdfshellescape`
-- `\pdfstrcmp`
-- `\pdfuniformdeviate`
-
-For ease of reference, these primitives will be referred to as the 'pdfTeX
-utilities'. With the exception of `\expanded`, these have been present in pdfTeX
-since the release of version 1.40.0 in 2007; `\expanded` was added for TeX Live
-2019. Similarly, the full set of these utility primitives has been available in
-XeTeX from the 2019 TeX Live release, and has always been available in LuaTeX
-(some by Lua emulation). The Japanese pTeX and upTeX gained all of the above
-(except `\ifincsname`) for TeX Live 2019 and `\ifincsname` for TeX Live 2020.
-
-Starting from release 2023-05-15, the `\expanded` primitive is *required*.
-Its slow emulation has been removed.
-
-In addition to the above, engines which are fully Unicode-compatible
-must provide the functionality of the following primitives, documented in the
-LuaTeX manual
-
-- `\Uchar`
-- `\Ucharcat`
-- `\Umathcode`
-
-The existence of the primitive `\Umathcode` is used as the marker for Unicode
-support.
-
-Issues
-------
-
-The issue tracker for LaTeX3 is currently located
-[on GitHub](https://github.com/latex3/latex3/issues).
-
-The LaTeX Project
-------------------
-
-Development of LaTeX3 is carried out by
-[The LaTeX Project](https://www.latex-project.org/latex3/).
-
-The development team can be contacted
-by e-mail: <latex-team@latex-project.org>.
-
------
-
-<p>Copyright (C) 1998-2012,2015-2024 The LaTeX Project <br />
-<a href="http://latex-project.org/">http://latex-project.org/</a> <br />
-All rights reserved.</p>