Here is the test page for the HTML processor.

This processor is used to put arbitrary HTML into a wiki page.  This is
useful to add elements that the markup language does not handle.

processor block [edit section]

== processor block ==
Here is the processor block:
{{{
{{{#!HTML
Here are some words in different styles: <b>bold</b>, <i>italic</i>,
<font color="red">red</font>
}} }
}}}

result output [edit section]

== result output ==
Here is the result from the processor:

{{{#!HTML
Here are some words in different styles: <b>bold</b>, <i>italic</i>,
<font color="red">red</font>
}}}

expected result [edit section]

== expected result ==
The expected output should be:

Here are some words in different styles '''bold''', ''italic'',
{{HTML(<font color="red">red</font>)}}