def reset(self):
        """Remove all annotations from window."""
        self.idx_annotations.setText('Load Annotation File...')
        self.idx_rater.setText('')

        self.annot = None
        self.dataset_markers = None

        # remove dataset marker
        self.idx_marker.clearContents()
        self.idx_marker.setRowCount(0)

        # remove summary statistics
        w1 = self.idx_summary.takeAt(1).widget()
        w2 = self.idx_summary.takeAt(1).widget()
        self.idx_summary.removeWidget(w1)
        self.idx_summary.removeWidget(w2)
        w1.deleteLater()
        w2.deleteLater()
        b1 = QGroupBox('Staging')
        b2 = QGroupBox('Signal quality')
        self.idx_summary.addWidget(b1)
        self.idx_summary.addWidget(b2)

        # remove annotations
        self.display_eventtype()
        self.update_annotations()

        self.parent.create_menubar()
Remove all annotations from window.