... TWiki ? ... It is extended to improve the display of hierarchical web structures, a feature added to TWiki4 and adds more flexibility when used in TWikiApplications. ... This tag iterates over all specified webs and all of their subwebs recursively while using the specified format strings to produce the output. ... subfooter : format string following the output of any subweb; subheader and subfooter are only added if the list of subwebs of the current web is not empty (defaults to footer ) . ...