Template:Warning
From irefindex
Usage
Method 1
The following displays the warning icon and the word 'Warning:'. You can follow this with whatever text/images/markup you like.
{{warning}} Don't do that!
Template:warning Don't do that!
Method 2
The following includes the text passed to the template, and uses a table to stop the text flowing round the icon.
{{warning|Here is a long warning, which is sufficiently wordy to run onto a second line, which would normally cause it to wrap round the icon, but because we passed it as a parameter it keeps its left alignment straight.}}