Write an index file for the current HTML output.
CreateIndexFile(HTMLbase,HTMLdir,title="R listing")
The base name for the HTML files.
The directory in which to write the HTML files.
The title for the listing.
nil
CreateIndexFile opens a new HTML index file. If there is another file with the same name, it will be overwritten. This is intentional, as the user may want to run htmlize repeatedly without generating multiple sets of files. It then writes the frameset definition into the file and closes it.