What to type: {{tlrow2|template name|first parameter|second|third}}
This can be used in template lists that show examples. It creates a row (or begins of a row) for the specified template in the same style as {{tlrow}}, however this shows the template with and without parameters.
At least one parameter needs to be included, otherwise the two output templates would be the same (use {{tlrow}} instead).
This automatically adds |category= (an empty string), so the template being demonstrated doesn't add the page to any categories. This only works if the template makes use of {{{category|[[Category:etc.]]}}}.