tags is included from html files. The code for this include <xt:include file="/manual/files/included" /> From html you can also declare a default file to be included if the file does not exist <xt:include default="/manual/files/default" file="/manual/files/no_such_file" /> This is the default include file. You can also do a random include of text or html files, Again Only the content between the tags is included from html files <xt:include file="/manual/files/random/*" />