Piwik - Exclude from cookie

The new Piwik version 0.6.1 allows you exclude visitors from a cookie. Ho开发者_运维问答w must the values look like for that cookie?

---

Here is the content of the piwik exclude cockie:

name: "piwik_ignore"  
value: empty  
domain: "your.piwik.domain"
path: "/"