Expands to: http://meta.dsic.upv.es/cgi-bin/twiki/script
Example: To get the authenticated version of the current topic you can write %SCRIPTURL{"viewauth"}%/%WEB%/%TOPIC% which expands to http://meta.dsic.upv.es/cgi-bin/twiki/viewauth/TWiki/VarSCRIPTURL2
Note: In most cases you should use %SCRIPTURLPATH{"script"}% instead, as it works with URL rewriting much better