What will happen when calling this API? I've checked the [API Document](http://www.last.fm/api/show/track.ban) but I can't figure out what this api actually do. Is this a API for the option `Remove from your Library`?

Screenshot for the option `Remove from your Library`

![screen shot 2013-11-08 at 3 27 59 am](https://f.cloud.github.com/assets/409951/1494906/bdaefc28-47e2-11e3-921f-f98970a4469d.png)