code: func Open(name string) (*DB, error) {
  	_, err := os.Stat(name)
  	if err != nil {
  		return nil, err
  	}
  	meta, err := sql.Open("sqlite3", name)
  	if err != nil {
  		return nil, err
  	}
  	store := new(dbstore.Storage)
  	store.Register(new(Doc))
  	store.Register(new(thumb))
  	store.Register(new(text))
  	return &DB{meta, store, name}, nil
  }
docs: // Open opens the database in the named file.