Det regulære udtryk for & URL; 'er siger (blandt andet), at markeringen skal begynde med teksten http: //. Dette beskrives ved brug af regulære udtryk med at sætte en hat (^ - tegnet). foran http: //).
The regular expression for & URL; s says (among other things), that the selection must start with the text http: / /. This is described using regular expressions by prefixing the text http: / / with a hat (the ^ character).