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New on CTAN: nxtlatex
by CTAN Announcements via ctan-ann 14 Mar '26

14 Mar '26

Volker Reichenberger submitted the nxtlatex package. Version number: 1.0 2026-03-10 License type: lppl1.3c ofl Summary description: Classes and themes for faculty NXT (Reutlingen University) Announcement text: ---------------------------------------------------------------------- The nxtlatex bundle provides LaTeX tools for the faculty NXT Nachhaltigkeit und Technologie (Sustainability and Technology) at Reutlingen University, Germany. It comprises three components: a thesis class (nxtthesis) based on KOMA-Script scrreprt; a letter class option (nxtbrief) for KOMA-Script scrlttr2; and a Beamer presentation theme (beamerthemeNXT) in 16:9 format with configurable header and footer graphics. An OpenType font (NXT_Logo.otf, OFL 1.1) encodes the NXT logo as a typographic glyph. All components can be adapted for use at other institutions. ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/nxtlatex More information is at https://www.ctan.org/pkg/nxtlatex ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: expltools
by CTAN Announcements 14 Mar '26

14 Mar '26

Vít Starý Novotný submitted an update to the expltools package. Version: 2026-03-13 License: lppl1.3c gpl2+ Summary description: Development tools for expl3 programmers Announcement text: ---------------------------------------------------------------------- ## expltools 2026-03-13 ### explcheck v0.18.2 #### Fixes This version of explcheck has fixed the following problems: - Support `c`-type arguments in variable and constants declarations, definitions, and uses. (#187) This improved [code coverage][] from ca 21% to 25% of all expl3 tokens on TeX Live 2024. - Do a better job detecting arguments in unrecognized replacement texts when extracting control sequence name patterns from `c`-type arguments in function calls. (#187) - In semantic analysis, consider the base variables in indirect variable definitions to be used, similarly to how base functions in indirect function definitions are considered used. (#187) This has removed a dozen false positive detections of issue W415 (Unused variable or constant) on TeX Live 2024. - Include `\q_no_value` among well-known expl3 control sequence names. (#187) - Have the issue E417 (Setting a variable as a constant) mask the issue E421 (Globally setting a local variable). (#187) This has removed a couple questionable detections of the issue E421 on TeX Live 2024. - Only consider potentially used function (variant) (un)definitions in the flow analysis. (suggested by @lostenderman in #156, fixed in #187) This change improves processing time by about 3% for an average package file in TeX Live 2024, and by up to 91% (or 11×) for large files such as `expl3-code.tex` when flow analysis is enabled despite incomplete code understanding. It also reduces the memory footprint of flow analysis by up to 4× for those files. After this change, the default value of the Lua option `max_reaching_definition_inner_loops` has been reduced from 650,000 to just 350,000 inner-loop iterations. Overall, the changes in the past two releases have reduced the processing time for large files such as `expl3-code.tex` from months to a little over an hour (up to 800×) when flow analysis is enabled despite incomplete code understanding, and have reduced the memory footprint of flow analysis by up to 12× for those files. [code-coverage]: https://witiko.github.io/Expl3-Linter-11/#code-coverage ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/expltools The package’s files themselves can be inspected at https://mirrors.ctan.org/support/expltools/ ---------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Vincent Goulet ---------------------------------------------------------------------- CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: spotxcolor
by CTAN Announcements 14 Mar '26

14 Mar '26

Munehiro Yamamoto submitted an update to the spotxcolor package. Version: 1.0 2026-03-14 License: lppl1.3c Summary description: Modern spot color support for the xcolor package Announcement text: ---------------------------------------------------------------------- The spotxcolor package has been updated to version 1.0. This release brings major enhancements for complex graphics, ensuring that your spot colors remain print-safe across all major TeX engines. ## Major Changes in v1.0 (since v0.14): * Advanced TikZ/PGF Support: Integrated comprehensive patches to resolve ColorSpace dictionary collisions with PGF. Spot colors now work seamlessly with complex TikZ graphics, basic shapes, and function graphs without destroying PDF resources. * CMYK Pattern Fills: Injected a core patch into PGF to force uncolored patterns (both legacy patterns and modern patterns.meta) to use CMYK instead of hardcoded RGB. This guarantees that spot colors used in TikZ patterns safely fall back to CMYK, preventing print separation issues. * Explicit Driver Support: Improved compatibility and explicit fallback mechanisms for dvipdfmx, pdftex, and luatex. * License: Updated the package license to LPPL v1.3c or later. ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/spotxcolor The package’s files themselves can be inspected at https://mirrors.ctan.org/macros/latex/contrib/spotxcolor/ ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Petra Rübe-Pugliese ------------------------------------------------------------------------ CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: l3build
by CTAN Announcements 14 Mar '26

14 Mar '26

The LaTeX Project Team submitted an update to the l3build package. Version: 2026-03-13 License: lppl1.3c Summary description: A testing and building system for (La)TeX Announcement text: -------------------------------------------------------------------------------- ## [2026-03-13] ### Added - Variable `xetexnopdf` (issue \#448) ### Changed - Align `\SHOWPDFTAGS` markers (may require `.tlg` update) ### Fixed - Skip LuaTeX-specific log normalization for `\SHOWPDFTAGS` output (issue \#443) -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/l3build More information is at https://ctan.org/pkg/l3build -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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New on CTAN: chempid
by CTAN Announcements 13 Mar '26

13 Mar '26

Roel Raike submitted the chempid package. Version: 1.0.0 License: mit Summary description: Draw Piping and Instrumentation diagrams using TikX via PGF Announcement text: -------------------------------------------------------------------------------- A humble LateX package that allows you to draw Piping & Instrumentation Diagrams (P&ID) or block diagrams quickly and efficiently. It contains pre-built assets in pgf to create P&ID drawings. We noticed that, with the diminishing compile time on Overleaf, it became increasingly difficult to use TikZ to this end. Therefore, we chose for pgf because it is faster to compile than TikZ objects. The objects themselves have been made in accordance with the ISO 10628-2 standard. -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/graphics/pgf/contrib/chempid More information is at https://ctan.org/pkg/chempid -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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CTAN update: quantum-chemistry-bonn
by CTAN Announcements 13 Mar '26

13 Mar '26

Christian Selzer submitted an update to the quantum-chemistry-bonn package. Version: 0.2.0 2026-03-12 License: lppl1.3c Summary description: Use consistent typesetting for quantum chemistry related software Announcement text: -------------------------------------------------------------------------------- We are pleased to announce **quantum-chemistry-bonn v0.2.0** - a lightweight LaTeX package designed to streamline the formatting of quantum-chemistry documents. Instead of manually typing program names, method labels, or colored highlights every time, **quantum-chemistry-bonn** provides a single, centrally maintained style file that automatically formats. With the new version now acronyms for common quantum chemistry terms. Additionally we fixed some minor mistakes from the previous version. **Download quantum-chemistry-bonn v0.2.0** from CTAN and simplify your QC writings today! -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/quantum-chemistry-bonn More information is at https://ctan.org/pkg/quantum-chemistry-bonn -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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New on CTAN: onlinebrief24
by CTAN Announcements via ctan-ann 13 Mar '26

13 Mar '26

Francesco Luciano submitted the onlinebrief24 package. Version number: 2026-03-10 License type: lppl1.3c Summary description: Class for DIN 5008 type-B business letters for use with onlinebrief24.de Announcement text: ---------------------------------------------------------------------- onlinebrief24 — LaTeX document class for DIN 5008 type-B business letters based on KOMA-Script scrlttr2. Layout and margins are calibrated for onlinebrief24.de, a German online postal service that prints and mails letters on behalf of the sender. Features: - DIN 5008 type-B layout with address window zones, fold marks, and dimension markers (guides mode) - "modern" option with header/footer and 8 color schemes - Configurable document language (lang option, default: ngerman) - Multipage support (overlays confined to page 1) - Mandatory field validation for return address and recipient - pdfLaTeX, XeLaTeX, and LuaLaTeX support with font fallback (Arial → TeX Gyre Heros) Location: /macros/latex/contrib/onlinebrief24 License: LPPL 1.3c ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/onlinebrief24 More information is at https://www.ctan.org/pkg/onlinebrief24 ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: graphicxpsd
by CTAN Announcements 13 Mar '26

13 Mar '26

Munehiro Yamamoto submitted an update to the graphicxpsd package. Version: 2.0 2026-03-01 License: mit Summary description: Adobe Photoshop Data format (PSD) support for graphicx package Announcement text: ---------------------------------------------------------------------- ## Major Updates in `graphicxpsd` v2.0 * **Transition to `expl3**`: Completely rewrote the package core using the modern LaTeX3 (`expl3`) interface, improving maintainability and namespace cleanliness. * **Modern Option Processing**: Replaced legacy option handling with the `l3keys` module for robust and flexible key-value processing. * **Native Shell Escape**: Removed the dependency on the external `shellesc` package. Now utilizes the native `expl3` function (`\sys_shell_now:e`) to execute external commands safely. * **Smart Engine Detection**: Implemented the `l3sys` module to automatically detect the TeX engine and output format (PDF vs. DVI), providing a smarter fallback mechanism without legacy conditional branches. ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/graphicxpsd The package’s files themselves can be inspected at https://mirrors.ctan.org/macros/latex/contrib/graphicxpsd/ ---------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Vincent Goulet ---------------------------------------------------------------------- CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: pyjupyter
by CTAN Announcements via ctan-ann 12 Mar '26

12 Mar '26

Bara Ouyèté Bright submitted an update to the pyjupyter package. Version number: 1.1.0 2026-03-11 License type: lppl1.3c Summary description: Lightweight environment for typesetting Python code Announcement text: ---------------------------------------------------------------------- We are pleased to announce pyjupyter v1.1.0, the second release of the LaTeX package for displaying Python code in Jupyter-style boxes. This release introduces significant enhancements and customization options based on user feedback. Users can now select from multiple monospaced fonts, including sourcecodepro, beramono, inconsolata, lmtt, courier, and txtt, allowing greater typographic flexibility. The package also supports adjustment of the code font size using standard LaTeX sizes such as tiny, scriptsize, footnotesize, small, normalsize, and large. Syntax highlighting has been improved to handle Python operators, keywords, and comments more accurately for better readability. Additionally, all tcolorbox options are now fully supported, including background and frame colors, corner rounding, spacing, and other layout customizations. Line numbering can be easily enabled using the built-in numbered option. This version maintains the package’s focus on providing a clean, minimal, and robust environment for embedding Python code in LaTeX documents, making it ideal for scientific reports, teaching materials, and reproducible research. ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/pyjupyter More information is at https://www.ctan.org/pkg/pyjupyter ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: tkz-elements
by CTAN Announcements via ctan-ann 12 Mar '26

12 Mar '26

Alain Matthes submitted an update to the tkz-elements package. Version number: 5.04c 2026-03-11 License type: lppl1.3c Summary description: A Lua library for drawing Euclidean geometry with TikZ or tkz-euclide Announcement text: ---------------------------------------------------------------------- ## [2026/03/11 — version 5.04c] ### Added - **triangle** - Added new attributes: `ma`, `mb`, `mc`, `ha`, `hb`, `hc`, `ia`, `ib`, `ic` - `ma`, `mb`, `mc`: midpoints of the sides - `ha`, `hb`, `hc`: feet of the altitudes - `ia`, `ib`, `ic`: feet of the internal angle bisectors - Added method: `triangle:reflections(pt)` ### Changed - **triangle** - Renamed method: `projection(pt)` -> `projections(pt)` ### Notes - **triangle** - `projections(pt)` and `reflections(pt)` apply to an arbitrary point. - `projection()` and `reflection()` apply to the triangle vertices. ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/tkz/tkz-elements More information is at https://www.ctan.org/pkg/tkz-elements ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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