The Hide, Group, Ignore and Include entries allow you to change the way Sites, URL's, Referrers, User Agents and Usernames are manipulated. The Ignore entries will cause The Webalizer to completely ignore records as if they didn't exist (and thus not counted in the main site totals).
The value can have either a leading or trailing '*' wildcard character. If no wildcard is found, a match can occur anywhere in the string. Given a string "www.yourmama.com", the values "your", "*mama.com" and "www.your*" will all match.