docs: private void buttonImportSettingsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonImportSettingsActionPerformed
  
          BaseFileChooser fileChooser = new BaseFileChooser();
          fileChooser.setAcceptAllFileFilterUsed(true);
          fileChooser.addChoosableFileFilter(new FileExtensionFilter("txt"));
          if(lastfile!=null)
              fileChooser.setSelectedFile(new File(lastfile));
          if (fileChooser.showOpenDialog(this.buttonImportSettings) == BaseFileChooser.APPROVE_OPTION) {
              lastfile = fileChooser.getSelectedFile().getPath();
              loadOptionsFromFile(fileChooser.getSelectedFile().getPath());
          }
      }