[Zope] i want to return a table from an external method what should be the format ?

I want to format data returned from a mainframe query and format it as a table similar to the return from a sql query so that I can use dtml-in. Any pointers to how the format of this buffer should be ? can you point me to some code I can look at or docs that describe this. Thanks sathya -- ########################## necessity is the mother of invention ##########################