gint ev_document_get_max_label_len (EvDocument *document);
gboolean ev_document_has_text_page_labels (EvDocument *document);
gboolean ev_document_find_page_by_label (EvDocument *document,
gint ev_document_get_max_label_len (EvDocument *document);
gboolean ev_document_has_text_page_labels (EvDocument *document);
gboolean ev_document_find_page_by_label (EvDocument *document,