code: def create_toolbar(MAIN):
      
      actions = MAIN.action
  
      toolbar = MAIN.addToolBar('File Management')
      toolbar.setObjectName('File Management')  # for savestate
      toolbar.addAction(MAIN.info.action['open_dataset'])
      toolbar.addSeparator()
      toolbar.addAction(MAIN.channels.action['load_channels'])
      toolbar.addAction(MAIN.channels.action['save_channels'])
      toolbar.addSeparator()
      toolbar.addAction(MAIN.notes.action['new_annot'])
      toolbar.addAction(MAIN.notes.action['load_annot'])
  
      """ ------ SCROLL ------ """
      actions = MAIN.traces.action
  
      toolbar = MAIN.addToolBar('Scroll')
      toolbar.setObjectName('Scroll')  # for savestate
      toolbar.addAction(actions['step_prev'])
      toolbar.addAction(actions['step_next'])
      toolbar.addAction(actions['page_prev'])
      toolbar.addAction(actions['page_next'])
      toolbar.addSeparator()
      toolbar.addAction(actions['X_more'])
      toolbar.addAction(actions['X_less'])
      toolbar.addSeparator()
      toolbar.addAction(actions['Y_less'])
      toolbar.addAction(actions['Y_more'])
      toolbar.addAction(actions['Y_wider'])
      toolbar.addAction(actions['Y_tighter'])
  
      """ ------ ANNOTATIONS ------ """
      actions = MAIN.notes.action
  
      toolbar = MAIN.addToolBar('Annotations')
      toolbar.setObjectName('Annotations')
  
      toolbar.addAction(actions['new_bookmark'])
      toolbar.addSeparator()
      toolbar.addAction(actions['new_event'])
      toolbar.addWidget(MAIN.notes.idx_eventtype)
      toolbar.addSeparator()
      toolbar.addWidget(MAIN.notes.idx_stage)
      toolbar.addWidget(MAIN.notes.idx_quality)
docs: Create the various toolbars.