TraceRegex × Regex Regex ActiveDraftObsoleteOngoingReviewDocument the syntax of regex. Control which part of the matched string should be returned. EXP1(?=EXP2) (?<=EXP2)EXP1 EXP1(?!EXP2) The string must match EXP1 and EXP2, but only the part of the string that matches EXP1 is returned. Comments Name E-Mail Please fill all the letters into the box to prove you're human. Z F H N S Please keep this field empty: PreviewComment