Template:!

| This template contains the pipe character (|). This template is used as an escape character (an alternate way to express a pipe where a pipe would normally be interpreted in other ways). For example, the pipe character normally separates arguments for a template:

It is therefore impossible to use a pipe as an argument in a template, such as:

This scenario is where this template comes in handy. The previous example would work as intended with | in place of the pipe: