Template:Infobox centered row/doc

This template displays the content alone in the center of a row in an infobox.

Usage
This template can be used by entering the following onto a relevant page, along with filling in any required parameters, along with any optional parameters if the page requires them. Note these are all unnamed parameters when using the template
 * is displayed as the value and can be formatted (e.g. 1000, "huge",, etc.)
 * If  (optional) is given, the row is only displayed if it is not empty
 * If  (optional) is given and   is empty, the row is displayed and shows else-value as its value

Example
Result: Displays a row containing the word  centered within it.

Displays a row containing the value of, but if it is not given, displays Unknown as the value instead.