Do you want to extract the complete HTML source code?
sourceExtract |<html*</html> | !csvLine
csvSave | mytext.csv
sourceExtract: *
can match \n
on Chrome/Edge now, but not Firefox. Firefox workaround: Use regular expression explicitly, something like regex=/<html(.|\n)*</html>/g
See also sourceExtract HTML mode - #6 by admin and csvSave - Daten-driven Testing