USERNAME -- your login username

• Foswiki makes names available in three formats: USERNAME like jsmith, WIKINAME like JohnSmith and WIKIUSERNAME like Main.JohnSmith. Un-authenticated users are all WikiGuest.
• Syntax: %USERNAME%
• Expands to: guest
• When used in a template topic, this macro will be expanded when the template is used to create a new topic. See TemplateTopics#TemplateTopicsVars for details.
• Related: REMOTE_USER, USERINFO, WIKINAME, WIKIUSERNAME, UserAuthentication