Go to Menu ''Database'' → ''New'' and select "HTML" in the input format combo box. There's an info in the "Parsing" tab about whether TagSoup is available or not. The same applies to the "Resources" tab in the "Database Properties" dialog.
These two dialogs come with an input field 'Parameters' where TagSoup options can be entered. Keys and values are separated by the equal sign, multiple options are separated by commas, e.g.: {{Code|<code>method=xml,nons=true}}</code>.
===Command Line===
fetch:doc("index.html", map {
'parser': 'html',
'htmlparser': map { 'htmlmethod': false()'xml', 'nodefaultsnons': true() }
})
</syntaxhighlight>