Template:Void/doc

This template does nothing visually. Technically, it throws away its parameters and outputs the null string.

It is useful for programming advanced templates, and is often used within a template to the right of an equals sign. It may also be used in a template to disambiguate parsing of braces.

It can also be used to temporarily disable code. Unlike "commenting out" with, it nests. This means that  is valid, whereas   will produce.

It provides a particularly concise way of temporarily disabling templates, by prefixing the template name with, making the template name becomes the (ignored) first unnamed parameter. For example, suppose you have a page for several days, and wish to change that to  during active editing sessions. Rather than delete the unused template, you can leave both templates in the wikitext and change from  to.

A deeper no-op is  or. It disappears completely upon saving.