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.

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about positioning document elements. Use this tag in addition to other tags specifying what should be positioned.
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about list environments. If your question deals with a specific list environment, such as {itemize}, {enumerate}, or {description}, add that tag along with this one. {enumitem} is a popular…
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for general questions related to (La)TeX environments. For questions about environment subcategories like {lists}, {quoting} environments, or {floats} use the appropriate tag instead…
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about how (La)TeX breaks paragraphs into lines and how those breaks can be influenced.
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for general questions about vector graphics created programmatically inside a (La)TeX document. For questions about specific packages, use the appropriate tag, e.g. {tikz-pgf} or {pstric…
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about typesetting footnotes. Popular packages are {footmisc}, {footnote}, and {bigfoot}.
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about dealing with (above all, changing) the margins of (whole) pages and, conversely, the width and height of the textblock and its positioning on the page. Popular packages are {geometr…
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specifically about the PDF file format. If your question is about producing PDF output, choose an appropriate tag such as {pdftex} or {ps2pdf}. If your question concerns PDF reader software, …
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a widely used TeX distribution available for Windows.
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about how (La)TeX breaks pages (and, in multi-column documents, columns) and how page/column breaking can be influenced.
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a document class designed especially for book-length documents. It incorporates the functions of many independent packages into one class.
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for questions relating to the use of the longtable package, which allows for making tables that can be broken across pages.
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a set of macros that allow the inclusion of PostScript code (e.g. drawings) directly inside (La)TeX code. This tag is compatible with the tag {diagrams}.
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about typesetting document titles, usually with the help of \maketitle or the titlepage environment. A popular package is {titling}.
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about the enumerate list environment. If you use this tag, add the more general {lists} tag.
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a bundle of classes and packages replacing the LaTeX standard classes and providing additional features with emphasis on typography and versatility.
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about the \chapter command which is one of the sectioning commands forming the logical structure of documents. This tag should only be used *in addition* to the more general {sectioning}…
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a package for bibliographies and citations. It is especially designed for the author-year type citation styles that are common in the natural and social sciences.
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about the first-line indentation of normal {paragraphs} as well as about the indentation of, e.g., {lists}, {quoting} environments, {captions}, and the various elements (sectioning nu…
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a widely used TeX distribution available for Windows, Mac OSX, Linux, and other Unix-like operating systems.
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a package for loading {opentype} fonts in XeLaTeX and LuaLaTeX.
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about the process you must go through to convert your TeX from .tex source files into your output document format, be it pdf, dvi, or something completely different.
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about small "sub"-figures and "sub"-tables within a single (floating) figure or table environment. For questions specifically about formatting a subfloat's caption, consider to use {sub…
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about selecting a document's standard font size (with class options like 12pt), changing relative font sizes within a document (with macros like \small or \large), and defining or modify…
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about how (La)TeX numbers pages and how page numbering can be influenced.
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for questions for syntax, semantics and expected behavior of TeX primitive control sequences, regardless of extensions (eTeX, etc.) formats (Plain or LaTeX) and macro packages (tikz). Su…
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about macros like \if and \ifx that may execute other macros depending on whether certain conditions are true or not. Popular packages are {etoolbox} and {ifthen}.
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about creating glossaries, acronyms, nomenclatures and similar lists. A popular package is `glossaries`.
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a package that defines an environment tabularx, an extension of tabular which has an additional column designator, X, which creates a paragraph-like column whose width automatically expa…
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about matrices in {equations} and {diagrams}.
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a TeX macro package like LaTeX and eplain. It provides a consistent, key-value driven user interface, supports all TeX engines, is tightly integrated with LuaTeX & Metapost, and supports gr…
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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.
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a package which allows the creation of custom page headers and footers.
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for questions regarding the installation of (La)TeX or any editor or other tool related to (La)TeX.
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about the LaTeX editor TeXstudio, formerly called TexMakerX. It is a fork of another editor called Texmaker, which has its own tag {texmaker}.
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environments which are commonly numbered. They are extensively used in math texts. Examples of such environments are theorems, corollaries, lemmas, propositions, remarks and definitions…