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This is the {{tl|key press}} template primarily designed to illustrate keys and keystrokes on a [[wikipedia:computer keyboard]]. With additional parameters, a single template can even illustrate a combination of multiple ''simultaneous'' keystrokes. A sequence of keystrokes, on the other hand, need to be demonstrated with separate templates.
This template currently handles up to 10 key name parameters, which should be more than enough to accommodate for any possible combination of simultaneous keystrokes. If it gets too many key name parameters it reports the page into [[:Category:Wikipedia keypress template parameter needs fixing]]. This means we can easily find those pages and fix them, or we can discover if we need to make this template take more parameters.
When you feed several key names to this template, it adds a "+" (or whatever the contents of the optional ''chain'' parameter) with no spaces around. This means it won't line wrap. But when you show key combinations for instance in a table then that might cause too wide items. Then instead manually build the key combination with spaces around the "+" so it can line wrap:
On the other hand, to illustrate Windows [[wikipedia:Alt code]]s you might want to use separate templates with no intervening punctuation or space. In most Windows systems in North America and Western Europe, for example, the [[wikipedia:plus-minus sign]] (±) can be entered by holding down the Alt key while typing <code>0177</code> (with the [[wikipedia:numeric keypad]]):
If you are wikilinking the keys, please ensure that you are piping to the correct page (e.g. <code><nowiki>[[Control key|Ctrl]]</nowiki></code> instead of <code><nowiki>[[Ctrl]]</nowiki></code>, which leads to a [[wikipedia:WP:Disambiguation page|disambiguation page]]).
===Wiki markup characters===
Some wiki markup character, like the [[wikipedia:pipe symbol]], the [[wikipedia:semicolon]] and the [[wikipedia:equals sign]], need to be entered using the {{tl|!}}, {{tl|;}} and {{tl|{{=}}}} templates or as an [[wikipedia:HTML entity]] &#124;, &#59;, &#61; respectively:
There are no characters for the [[wikipedia:Windows key]] and [[wikipedia:Menu key]]. So this template shows approximate characters for them, namely the 'SQUARED PLUS' and 'STRICTLY EQUIVALENT TO' from the [[wikipedia:Mathematical Operators]] block:
* {{tl|Button}}, which produces a similar visual effect but without the semantic markup (e.g. {{Button|sample text}}).
* {{tl|Key top}}, which produces a similar visual effect, but includes more symbols and does not directly support key chaining (e.g. {{key top|Caps Lock}}){{Semantic markup templates}}