Regex Tester & Validator

This PCRE regex matches a line break followed by two consecutive quoted strings. The first quoted string must contain one of the specific identifiers "OI", "OX", or "OPSIMEX" (case-insensitive), optionally padded with whitespace. The second quoted string captures any sequence of non-whitespace characters. It is highly useful for parsing custom configuration files, structured logs, or data formats where these operational tags are assigned a specific value.