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This template does nothing.
More exactly, it outputs the null string. It's useful for programming advanced templates.
- It often is used within a template to the right of an equals sign.
- It can bevery useful in (usually temporary pending a revision, or to troubleshoot template behavior) killing part of template or page containing text and (especially multiple) html comments (<!--- some commented stuff --->) surrounding the combined strings and multiple lines inside the template, which feeds them ... nowhere. Into the mythological bit bucket.
It's also possible to use
Template:X instead of