The package enables the user to typeset exams with multiple choice, open questions and many other types of exercise. Both questions and answers may be randomly distributed within the exam, and the solutions are typeset automatically. Exercises may contain a wide number of random parameters and it is possible to do arithmetical operations on them. The package is localised in Italian, English, French, German, Greek, Serbian, and Spanish.

The package provides support for use of Babel in documents written in Georgian. The package is adapted for use both under traditional TeX engines, and under XeTeX and LuaTeX.

Latexdiff is a Perl script for visual mark up and revision of significant differences between two LaTeX files. Various options are available for visual markup using standard LaTeX packages such as color. Changes not directly affecting visible text, for example in formatting commands, are still marked in the LaTeX source. A rudimentary revision facilility is provided by another Perl script, latexrevise, which accepts or rejects all changes. Manual editing of the difference file can be used to override this default behaviour and accept or reject selected changes only.

The package is a re-implementation of the contour package, making it Bidi-aware, and adding support of the xdvipdfmx (when the outline option of the package is used).

Pacioli was a 15th century mathematician, and his font was designed according to the divine proportion. The font consists of uppercase letters together with punctuation and some analphabetics; no lowercase or digits. The package provides Metafont source for the font together with LaTeX support.

The package allows you to enter Python code within a LaTeX document, execute the code, and access its output in the original document. There is also support for Bash, JavaScript, Julia, Octave, Perl, R, Raku (Perl 6), Ruby, Rust, and SageMath. Code is only executed when it has been modified, or when it meets user-specified criteria. Code may be divided into user-defined sessions, which automatically run in parallel. Errors and warnings are synchronized with the LaTeX document, so that they refer to the document's line numbers. External dependencies can be tracked, so that code is re-executed when the data it depends on is modified. PythonTeX also provides syntax highlighting for code in LaTeX documents via the Pygments syntax highlighter.

The package also provides a depythontex utility. This creates a copy of the document in which all Python code has been replaced by its output. This is useful for journal submissions, sharing documents, and conversion to other formats.

This package provides commands \alphalph and \AlphAlph. They are like \number but the expansion consists of lowercase and uppercase letters respectively (1 to a, 26 to z, 27 to aa, 52 to zz, 53 to ba, 702 to zz, 703 to aaa, etc.). Alphalph's commands can be used as a replacement for LaTeX's \@alph and \@Alph macros.

The package enables the user to produce and typeset one or more indexes simultaneously with a document. The package is known to work in LaTeX documents processed with pdfLaTeX, XeLaTeX and LuaLaTeX. If makeindex is used for processing the index entries, no particular setting up is needed. When using Xindy or other programs, it is necessary to enable shell escape; shell escape is also needed if splitindex is used.

This package repeats item of an index if a page or column break occurs within a list of subitems. This helps to find out to which main item a subitem belongs.

The package provides the means for LaTeX to implement a grid system as known from CSS grid systems. The facility is useful for creating box layouts as used in brochures.

The caption package provides many ways to customise the captions in floating environments like figure and table, and cooperates with many other packages. Facilities include rotating captions, sideways captions, continued captions (for tables or figures that come in several parts). A list of compatibility notes, for other packages, is provided in the documentation. The package also provides the caption outside float facility, in the same way that simpler packages like capt-of do.

pst-lsystem is a PSTricks based package for creating images based on a L-system. A L-system (Lindenmayer system) is a set of rules which can be used to model the morphology of a variety of organisms or fractals like the Kochflake or Hilbert curve.

The package will directly insert nonbreakable spaces (in Czech, vlna or vlnka), after nonsyllabic prepositions and single letter conjuctions, while the document is being typeset.

The package moves footnote marks after following punctuation (comma or full stop), and adjusts kerning as appropriate. As a side effect, a change to the handling of multiple footnotes is provided.

The package may be used for generating invoices. The package can deal with invisible expense items and deductions; output may be presented in any of 10 different languages.

The calculation environment formats reasoned calculations, also called calculational proofs. The package allows steps and expressions to be numbered (by LaTeX equation numbers, obeying the LaTeX \label command to refer to these numbers), and a step doesn't take vertical space if its hint is empty. An expression in a calculation can be given a comment; it is placed at the side opposite to the equation numbers. Calculations are allowed inside hints although numbering and commenting is then disabled.

This package provides extra PDF features for OpTeX (or in limited form for plain LuaTeX and LuaLaTeX). As a minimalistic format, OpTeX does not support advanced features of the PDF file format in its base. This third party package aims to provide them. As such, it supports insertion of multimedia (audio, video, 3D), hyperlinks and other actions, triggering events, transitions, and attachments.

This package is intended for typesetting drama of any length. It provides two environments for typesetting dialogues in prose or in verse; new document divisions corresponding to acts and scenes; macros that control the appearance of characters and stage directions; and automatic generation of a ``dramatis personae'' list.

Nath is a LaTeX style to separate presentation and content in mathematical typography. The style delivers a particular context-dependent presentation on the basis of a rather coarse context-independent notation. Highlighted features: depending on the context, the command \frac produces either built-up or case or solidus fractions, with parentheses added whenever required for preservation of the mathematical meaning; delimiters adapt their size to the material enclosed, rendering \left and \right almost obsolete.

The package provides a minimalist shell script, for Unix systems, that displays the information content in a \ProvidesFile, \ProvidesPackage or \ProvidesClass command in a LaTeX source file.

The package finds strings (e.g., parts of words or phrases) and manipulates them, thus turning each word or phrase into a possible command. It is written in plain XeTeX and should thus work with any format. The main application for the moment is XeIndex, an automatic index for XeLaTeX, but examples are given of simple use to check spelling, count words, and highlight syntax of programming languages.

The package provides fonts, hyphenation patterns, and supporting macros to typeset Church Slavonic texts.

This package contains the source of the examples printed in The LaTeX Graphics Companion book, together with necessary supporting files.

The package provides convenient bundling of the \parshape primitive. This is a TeX package.