Changes
These are called attributes; no one who does HTML calls them "parameters".
<code class="{{#ifeq:{{{wrap|}}}|yes|wrap|nowrap}}" style="{{#ifeq:{{{style|}}}|plain|border:none;background:transparent;|{{{style|}}}}}"><!--
Opening tag
-->{{#switch:{{{2|pair}}}
|c|close =
|e|empty|s|single|v|void
|o|open
|p|pair = <{{#if:{{{link|}}}|[[HTML element#{{{1|tag}}}|{{{1|tag}}}]]|{{{1|tag}}}}}{{#if:{{{params|{{{attribs|}}}}}}| {{{params|{{{attribs}}}}}}}}
}}<!--
Content between tags
-->{{#switch:{{{2|pair}}}
|c|close = {{{content|}}}
|e|empty|s|single|v|void =  />
|o|open = >{{{content|}}}
|p|pair = {{#ifeq:{{{1|tag}}}|!--||>}}{{{content|...}}}
}}<!--
Closing tag
-->{{#switch:{{{2|pair}}}
|e|empty|s|single|v|void
|o|open =
|c|close
|p|pair = {{#ifeq:{{{1|tag}}}|!--|-->|</{{{1|tag}}}>}}
}}<!--
--></code><noinclude>
{{Documentation}}
</noinclude>
Opening tag
-->{{#switch:{{{2|pair}}}
|c|close =
|e|empty|s|single|v|void
|o|open
|p|pair = <{{#if:{{{link|}}}|[[HTML element#{{{1|tag}}}|{{{1|tag}}}]]|{{{1|tag}}}}}{{#if:{{{params|{{{attribs|}}}}}}| {{{params|{{{attribs}}}}}}}}
}}<!--
Content between tags
-->{{#switch:{{{2|pair}}}
|c|close = {{{content|}}}
|e|empty|s|single|v|void =  />
|o|open = >{{{content|}}}
|p|pair = {{#ifeq:{{{1|tag}}}|!--||>}}{{{content|...}}}
}}<!--
Closing tag
-->{{#switch:{{{2|pair}}}
|e|empty|s|single|v|void
|o|open =
|c|close
|p|pair = {{#ifeq:{{{1|tag}}}|!--|-->|</{{{1|tag}}}>}}
}}<!--
--></code><noinclude>
{{Documentation}}
</noinclude>