Editing Template:Fmbox/doc (section)

===Technical details===

This template currently uses hard coded styles and class names. Later it will only use CSS classes making it easier to skin. (In the meantime it can be skinned by using the "<code>!important</code>" keyword.)

If you need to make a box that is less than 100% wide, then do ''not'' use this box; instead, use {{tl|Ombox}}. Since this box doesn't have the "1px empty image cell" code that makes it so the other mboxes get proper box flow in all browsers when less than 100% wide.

If you need to use special characters in the {{mono|text}} parameter, then you need to "escape" them like this: 
<syntaxhighlight lang="wikitext">
{{Fmbox
| text = <div>
Equal sign = and a start and end brace { } work fine as they are. 
But here is a pipe {{!}} and two end braces <nowiki>}}</nowiki>. 
And now a pipe and end braces <nowiki>|}}</nowiki>.
</div>
}}
</syntaxhighlight>
This produces:
{{Fmbox
| text = <div>
Equal sign = and a start and end brace { } work fine as they are. 
But here is a pipe {{!}} and two end braces <nowiki>}}</nowiki>. 
And now a pipe and end braces <nowiki>|}}</nowiki>.
</div>
}}

To avoid potential difficulties with e.g. [[Help:ParserFunctions|parser functions]] or [[Help:Special characters|special characters]], this metatemplate uses HTML rather than [[wiki markup]] to produce the table carrying its output.

As some older browsers have difficulty rendering SVG transparency, the default images for this metatemplate are in PNG rather than SVG format and have been optimised by hand to ensure they work across a wide range and age of browsers. (SVG icons only look somewhat bad in older browsers, thus such optimisation is only worthwhile for very widely used icons.)

'''''Admins:''''' MediaWiki's parsing and converting HTML markup for system messages is not the same as for normal pages: <code><nowiki><br></nowiki></code> for instance, is not automatically converted to {{tag|style=plain|br|single}} and missing {{tag|style=plain|td|close}} and {{tag|style=plain|tr|close}} tags are not added automatically. Any HTML code used in system messages, therefore, must already be valid (include all complementary close tags, etc.).

For more details, see [[Template talk:Fmbox|the talk page]]. Since this template works in almost the same way as {{tl|Ambox}}, {{tl|Tmbox}}, {{tl|Imbox}}, {{tl|Cmbox}} and {{tl|Ombox}}, further information found on their talk pages may also be relevant.