[TYPO3] clear a value from a template

[Cate & Peter]

> You can use condition for that. Check
> http://typo3.org/documentation/document-
> library/references/doc_core_tsref/4.1.0/view/4/1/
> 
> For example:
> 
> [treeLevel = 2]
> This changes something with the template,if the page viewed
> is on level 2
[Cate wrote:] 
Perfect - thanks for that quick response Krystian :)

Cate