mirror of https://github.com/texmacs/doc.git
55 lines
2.2 KiB
Tcl
55 lines
2.2 KiB
Tcl
<TeXmacs|1.99.13>
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<style|<tuple|tmdoc|english|old-spacing|old-dots|old-lengths>>
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<\body>
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<tmdoc-title|Environments>
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In a similar way as content-based tags, environments are used to mark
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portions of text with a special meaning. However, while
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<hlink|content-based tags|man-content-tags.en.tm> usually enclose small
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portions of text, environments often enclose portions that are several
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paragraphs long. Frequently used environments in mathematics are
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<markup|theorem> and <markup|proof>, like in the example below:
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<\theorem>
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There exist no positive integers <math|a>, <math|b>, <math|c> and
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<math|n> with <math|n\<geqslant\>3>, such that
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<math|a<rsup|n>+b<rsup|n>=c<rsup|n>>.
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</theorem>
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<\proof>
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I do not have room here to write the proof down.
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</proof>
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You may enter environments using <menu|Insert|Environment>. Other
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environments with a similar rendering as theorems are <markup|proposition>,
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<markup|lemma>, <markup|corollary>, <markup|axiom>, <markup|definition>.
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You may use the <markup|dueto> macro (entered using <key|\\ d u e t o
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return>) in order to specify the person(s) to which the theorem is due,
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like in
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<\theorem>
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<dueto|Pythagoras>Under nice circumstances, we have
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<math|a<rsup|2>+b<rsup|2>=c<rsup|2>>.
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</theorem>
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Other frequently used environments with a similar rendering as theorems,
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but which do not emphasize the enclosed text, are <markup|remark>,
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<markup|note>, <markup|example>, <markup|warning>, <markup|exercise> and
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<markup|problem>. The remaining environments <markup|verbatim>,
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<markup|code>, <markup|quote>, <markup|quotation> and <markup|verse> can be
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used in order to enter multiparagraph text or code, quotations or poetry.
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<tmdoc-copyright|1998\U2020|Joris van der Hoeven>
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<tmdoc-license|Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License, Version 1.1
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or any later version published by the Free Software Foundation; with no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU Free
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Documentation License".>
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</body>
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<initial|<\collection>
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</collection>> |