Regex Tester & Validator

This regex matches structured data entries containing the fields SLN, GRP, STYP, and SNO, each separated by whitespace. SLN and GRP are followed by numbers, STYP is followed by a quoted two-letter code (e.g., 'TZ'), and SNO is followed by a number. It is case-insensitive for field names and uses global/multiline flags. Useful for parsing or validating formatted records in log files or configuration data.