The package allows you to enter systems of equations or inequalities in an intuitive way, and produces typeset output where the terms and signs are aligned vertically. The package works with plain TeX or LaTeX, but e-TeX is required.

The pracjourn class is used for typesetting articles in the PracTeX Journal. It is based on the article class with modifications to allow for more flexible front-matter and revision control, among other small changes.

The package provides a parser \poldef of algebraic polynomial expressions. Once defined, a polynomial is usable by its name either as a numerical function in \xintexpr or \xinteval, or for additional polynomial definitions, or as argument to the package macros. The localization of real roots to arbitrary precision as well as the determination of all rational roots is implemented via such macros.

The bundle is a set of packages, designed to give mathematics teachers (and students) easy access to programming of drawings with TikZ.

The package provides the command \chemfig, which draws molecules using the TikZ package. While the diagrams produced are essentially 2-dimensional, the package supports many of the conventional notations for illustrating the 3-dimensional layout of a molecule.

The package provides printable cut-outs for various CD, DVD and other disc holders. The name of the package comes from its implementation and ease of use; it was designed just for text content, but since the text is placed in a \parbox in a tabular environment cell, a rather wide range of things may be placed.

TeXmate formats chess games from very simple ASCII input. The clean 1.: e4 e5; 2.: Nf3 Nc6; 3.: Bb5 a6 will produce the same results as the sloppier 1 e4 e5; Nf3 Nc6 3..: Bb5 a6. The resulting format is fully customizable. There are 4 levels of commentary: 1 is the main game, 2-3 are commentaries. Each has its fonts, punctuation marks, etc., and these are also customizable. The package includes a tool for the creation of diagrams. The package works in conjunction with skak to produce diagrams of the current position automatically. For chess fonts, the package uses the chessfss system.

This package provides a geometric sans serif blackboard bold font, for use in mathematics; Metafont sources are provided, as well as macros for use with LaTeX.

The package defines \pstODEsolve for solving initial value problems for sets of Ordinary Differential Equations (ODE) using the Runge-Kutta-Fehlberg (RKF45) method with automatic step size adjustment. The result is stored as a PostScript object and may be plotted later using macros from other PSTricks packages, such as \listplot (from pst-plot) and \listplotThreeD (from pst-3dplot), or may be further processed by user-defined PostScript procedures. Optionally, the computed state vectors can be written as a table to a text file.

The class provides support for the documentation of the author's packages, using KOMA-Script. This class is provided as is solely for the benefit of anyone who wants to compile the documentation of those packages.

This package is an introduction to the components and files users of TeX may encounter.

This LaTeX package uses TikZ to generate (Hasse) diagrams for causal sets (causets) to be used inline with text or in mathematical expressions. The macros can also be used in the tikzpicture environment to annotate or modify a diagram.

This class provides patches of some Beamer templates and commands for presentation from right to left. It requires Babel with the LuaTeX engine.

This package is used to draw pseudo-3D Blochsphere diagrams. It supports various annotations, such as great and small circles, axes, rotation markings and state vectors. It can be used in a standalone fashion, or nested within a tikzpicture environment by setting the environment option nested to true.

The package offers enhancements for theorem-like environments: easier control of layout; proper placement of endmarks even when the environment ends with \end{enumerate} or \end{displaymath} (including support for amsmath displayed-equation environments); and support for making a list of theorems, analogous to \listoffigures.

The package can fetch the date declaration of packages and files used by a document, and then provide the information in macros. The facilities provide a means of obtaining the date of a package being documented.

Q-and-A is a LaTeX document class for you to typeset Q&A-style conversation. It turns simple pure text Q&A dialog into a carefully designed document. Notably, it features two themes, ChatGPT-light and ChatGPT-dark, enabling you to format your Q&A dialog in a way that closely resembles the interface of ChatGPT.

The set of the Japanese logical fonts (JFMs) that are used as standard fonts in pTeX and upTeX contains both Unicode JFMs and non-Unicode JFMs. This bundle provides an alternative set of non-Unicode JFMs that are tied to the virtual fonts (VFs) that refer to the glyphs in the Unicode JFMs. Moreover it provides a LaTeX package that redefines the NFSS settings of the Japanese fonts of (u)pLaTeX so that the new set of non-Unicode JFMs will be employed. As a whole, this bundle allows users to dispense with the mapping setup on non-Unicode JFMs. Such a setup is useful in particular when users want to use OpenType fonts (such as Source Han Serif) that have a glyph encoding different from Adobe-Japan1, because mapping setups from non-Unicode JFMs to such physical fonts are difficult to prepare.

The Molecular Coding Format (MCF) is a linear notation for describing chemical structure diagrams. This package converts MCF to graphic files using MetaPost.

The package provides support for typesetting simple chemical formulae, those long IUPAC compound names, and some chemical idioms. It also supports the labelling of compounds and reference to labelled compounds.

This package helps typesetting business cards. It produces cards at the normal US card size, 76.2mm x 50.8mm.

This package provides a collection of experimental programs and developments based on, or complementary to, the matter in his distribution directories.

The package provides an environment conteq, which will lay out systems of continued equalities (or inequalities). Several variant layouts of the equalities are provided, and the user may define their own.

These fonts represent translation to PostScript Type 1 of the ESSTIX fonts. ESSTIX seem to have been a precursor to the STIX project. The accompanying virtual fonts with customized metrics and LaTeX support files allow their use as calligraphic, fraktur and double-struck (blackboard bold) in maths mode.