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diff --git a/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-limits.html b/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-limits.html new file mode 100644 index 00000000000..49ebcf4c7c0 --- /dev/null +++ b/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-limits.html @@ -0,0 +1,34 @@ +<head> +<title>UK TeX FAQ -- question label limits</title> +</head><body> +<h3>Sub- and superscript positioning for operators</h3> +<p>The commonest hand-written style for expressions is to place the limit +expressions on operators such as <code>\</code><code>sum</code> and <code>\</code><code>int</code> physically +above and below the operator. In (La)TeX, we write these limit +expressions using sub- and superscripts applied to the operator, but +they don't always appear in the "handwritten" way in TeX's +output. +<p>The reason is, that when an expression appears in non-display maths, +in running text (and is therefore in TeX <code>\</code><code>textstyle</code>), placing +the limits thus could lead to ragged line spacing (and hence +difficult-to-read text). It is therefore common (in <code>\</code><code>textstyle</code>) +to place the limits as one would sub- and superscripts of variables. +<p>This is not universally satisfactory, so the primitive <code>\</code><code>limits</code> is +provided: +<pre> + $\sum\limits_{n=1}^{m} ...$ +</pre> +which will place the limits right above and below the symbol (and be +blowed to the typography...). +<p>Contrariwise, you may wish to change the arrangement of the limits +when in <code>\</code><code>displaystyle</code>. For this purpose, there's a corresponding +<code>\</code><code>nolimits</code>: +<pre> + \[\sum\nolimits_{n=1}^{m} ...\] +</pre> +which will place the limits as they would be in <code>\</code><code>textstyle</code>. +<p>(Note that the macro <code>\</code><code>int</code> normally has <code>\</code><code>nolimits</code> built in to +its definition. There is an example in the TeXbook to show how odd +<code>\</code><code>int</code><code>\</code><code>limits</code> looks when typeset.) +<p><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=limits">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=limits</a> +</body> |