Options:
{{{
{{{ code ~}}}
``` code ```
}}}

There must be a way for users to enter text which will not be formatted by the wiki engine. Triple curly brackets ({{{{{{~}}}}}}) were chosen due to their visibility and unlikeliness to be in the "code" itself.

Backticks ({{{```}}}) were not chosen due to their low visibility and confusion users would have that they were regular single quote marks ({{{'''}}})

In MediaWiki template space {{{ {{{ }}} }}} are used for denoting variables.