Editing Template:Reflist/doc (section)

===Columns===
{{tlx|Reflist|30em}} (for example) instructs the browser to create as many columns as possible (of width at least 30&nbsp;[[Em (typography)|em]], in this example) given the width of the display window. ([http://www.w3.org/TR/CSS21/syndata.html#length-units Units supported are em, ex, in, cm, mm, pt, pc, px], but em is almost always used.) There must not be a space between the number and the unit. Percent is not supported.

Choose a width appropriate to the typical width of the references:
* Automatic columns (default when no width is specified): Where there are only a few {{Fnote|lc=y}}; see, e.g., {{oldid|Silver State Arena|530211388#References|Silver State Arena (23:05, 28 December 2012)}}
* 30em: Where there are many footnotes plus a page-width Bibliography subsection: see, e.g., {{oldid|Ebola virus disease|819923970#References|Ebola virus disease (02:02, 12 January 2018)}}
* 20em: Where {{Sfnote|lc=y}} are used; see, e.g., {{oldid|NBR 224 and 420 Classes|442508215#Notes|NBR 224 and 420 Classes (13:32, 1 August 2011)}}.

====Example====
{{markup|title=15em wide columns (vary width of display window to see change in number of columns)
|<nowiki>Lorem ipsum.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>

==References==
{{Reflist|15em}}</nowiki>
|Lorem ipsum.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>
Lorem ipsum dolor sit amet.<ref>Source name, access date, etc.</ref>

{{fake heading|sub=3|References}}
{{Reflist|15em}}<!-- note 15em used here for illustration purposes because larger value won't columnize in the "renders as" part on many screens -->
}}

The syntax {{tlx|Reflist|2}} (for example), which specifies two columns of equal width ''regardless of the available display width'', is deprecated. When you use 1 the template gives you a single column while 2 will pretend you specified 30em. When using higher column counts, it will pretend you specified 25em.