Adds a new page to the begining of the notebook. child is added as the "page" with tab_label as the tab. child can be any widget but it is most useful when child is descended from GtkContainer. The tab_label is usually a GtkLabel but may be any widget.

tab_label is optional. If it is not supplied the tab will be set to "page n" where n is the page number.

See also: append_page() , insert_page()