Editing Module:Convert/documentation/conversion data/introduction (section)

=== Name ===
The name of the unit is required. The plural name is optional. If no plural name is given, it is created by appending "s" to the singular name. For example, the <code>ft</code> unit has name "foot" and plural name "feet"—the plural name is necessary to avoid the plural of "foot" being "foots".

The US name is optional. If no US name is given, it is the same as the normal name. The US plural name is optional—if it is missing it is created by appending "s" to the US name. When using {{tl|convert}}, the option {{para|sp|us}} causes the US name to be displayed if a name is required for the convert.

Any <code>%s</code> in the name columns is replaced with the appropriate SI prefix, or is removed if SI prefixes are not appropriate (not suitable for the unit, or not used in the conversion). It is only necessary to use <code>%s</code> if the unit accepts prefixes, and if the prefix is not at the start of the unit's name, for example with <code>m2</code> and <code>m3</code>.