Regex Editor & Tester

This regex matches a line that begins with the Dutch phrase 'Contemporaine vermeldingen' (meaning 'contemporary mentions'), followed by whitespace and then a reference that starts with either a '[' or 'cfr'. It is used to extract specific entries from a text, likely in archival or bibliographic records, where such headings introduce cross-references. The 'gm' flags make it match across multiple lines and treat the pattern as multiline.