A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

{fancyhdr} is a package which allows the creation of custom page headers and footers.
{itemize} is about the itemize list environment. If you use this tag, add the more general {lists} tag.
{theorems} are environments which are commonly numbered. They are extensively used in math texts. Examples of such environments are theorems, corollaries, lemmas, propositions, remarks and definitions…
1508 questions
{arrows} is about drawing arrows, usually in {math-mode} or inside {diagrams}.
{minipage} is an environment providing a paragraph box which is a complete mini version of a page.
{boxes} are the units used by (La)TeX to construct a page by pasting them together horizontally or vertically. A single character from a font is a box, as are the lines of type and the eventual page.
{labels} is about customizing the labels of {diagrams} and mathematical constructs like {matrices}. For questions about \label or similar commands, use {cross-referencing} instead.
{texmaker} is a cross-platform LaTeX editor. If your question is about its fork TexMakerX, which is now called TeXstudio, please use the tag {texstudio}.
{installing} is for questions regarding the installation of (La)TeX or any editor or other tool related to (La)TeX.
{babel} is a package that manages culturally-determined typographical (and other) rules, and hyphenation patterns for a wide range of languages.
{siunitx} is a package that provides consistent typesetting of physical quantities, allowing application of various typographic conventions with the same input syntax. This package replaces the deprec…
{nodes} is about nodes in {diagrams}.
1321 questions
{titlesec} is a package providing an interface to {sectioning} commands.
{indexing} is about creating an index or similar lists for your document, usually by means of executing makeindex.
{two-column} is about the \twocolumn command and the class option of the same name. For questions about the {multicol} package, use the appropriate tag instead.
{templates} is about templates built on {document-classes} to provide the basis for a particular document type. Questions with this tag should be about the features of the template, not the underlying…
{counters} is about macro writing involving counters. For general questions about numbering document elements, use {numbering}.
{unicode} is for questions about Unicode (an international standard for character encoding) and its implementations. For questions about input encodings use {input-encodings}.
{paragraphs} are distinct text divisions that begin on a new, usually indented line. In TeX, a paragraph is ended by the \par command or at least one blank line. If your question is about the \paragra…
Overleaf (formerly WriteLaTeX) is a collaborative online LaTeX editor.
{multicolumn} is for questions concerning the formatting of table cells that span several columns.
{moderncv} is a document class for CVs (curriculum vitae) and Cover Letters.
1087 questions
{tikz-trees} is for questions addressing issues related to trees in {tikz-pgf}.
{expl3} is the programming "language" written for the LaTeX3 project. It is a library of common functions for storing and manipulating data and performing higher-level logical tasks than commonly prov…
{pgfplotstable} is a package that can read, parse, modify or generate tables. Data is provided via either external files or inline code. It also serves as the data handler of the graphics package {pgf…
{multicol} is about the multicol package and its multicols environment which allows to typeset text in multiple columns (up to 10) and to balance the end of each column at the end of the environment. …
{line-spacing} is about adjusting the space between the lines of a document. A popular package is {setspace}.
{enumitem} is a package that provides user control over the layout of the three basic list environments: {itemize}, {enumerate}, and {description}.
{multirow} is a package for facilitating multirow cells in {tables} and {arrays}.
1025 questions
{document-classes} is for questions relating to the document class of the TeX file. This sets up various document-wide formatting elements.
{algorithms} is about the presentation, numbering, and layout of algorithms or pseudocode in documents. Popular packages are algorithms, {algorithmicx}, {algorithm2e} and {listings}. For questions abo…
1015 questions
{typography} is for questions about the implementation of beautiful typography using TeX.
1015 questions
{verbatim} is about macros and environments like “\verb” and “verbatim” which implement some form of verbatim mode, i.e. change the {catcodes}. A popular package is {fancyvrb}. For questions about the…
{plot} is for questions concerned with plotting data or functions using TeX. For questions specific to the pgfplots package, use the {pgfplots} tag.
996 questions
{punctuation} is for questions involving the typesetting of punctuation marks. If your question relates to punctuation in particular document parts such as e.g. bibliography formatting or section form…
976 questions
Graphs are (1) graphs of functions or (2) sets of nodes and edges.
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