{{key}} is a template most useful in giving instructions about how to use the wiki. It gives the user a way to make it absolutely obvious that you're referring to a key which needs to be pressed on a computer keyboard.
Usage
Without any modifiers, the template defaults to presenting the "enter" key. So the following sequence:
{{key}}will produce Enter If you want to specify another key, you'd enter it as an optional parameter. Thus,
{{key|Tab}}results in Tab
Known issues
Line breaks are not properly accepted by the template, so some keys can't be closely represented at the present time. For instance:
{{key|Page<br>Down}}will render as Page
Down
Though undesirable, this is not deemed to be a terribly high-priority item to fix, since most instruction on this wiki would not require referencing keys that are ordinarily seen on keyboards on two lines.