Template talk:Hider hiding

documentation?
Documentation is missing. What is the syntax of this template? Must be something like - Gryllida (talk) 06:24, 1 October 2009 (UTC)

And how can I write that the content is hidden when the page is seen first? Something like "hidden=1", but this doesn't work. Where's the documentation? Gryllida (talk) 06:27, 1 October 2009 (UTC)