You can suppress the rendering of the Document title by setting the request variable suppress_title

If You wonder how it works, look at /silva/service_widgets/top/doc/mode_view/render

There are several places where You can set this request attribute:

• in the index_html: no Documents will have a title displayed
• in some content.html or override.html: documents rendered in this folder skip headlines
• if You define Your own content type using the doc XML tag somewhere, set it in the public view to suppress the title for this view.

Note the title is still displayed in the toc, and in the tab_preview. (Except if You disable it there ...)

Also note this does not influence the title display of other content types (e.g. the DemoObject) as their title rendering is somewhere else.

On the other hand it maybe makes sense to support the suppress_title in the public view of Your custom content type, too.