text: export const ADD_BLOCK = 'ADD_BLOCK';
  export const ADD_PART = 'ADD_PART';
  export const CLEAR_SELECTED_NOTE = 'CLEAR_SELECTED_NOTE';
  export const EXPORT_TAB_TXT = 'EXPORT_TAB_TXT';
  export const MOVE_SELECTED_NOTE = 'MOVE_SELECTED_NOTE';
  export const REMOVE_BLOCK = 'REMOVE_BLOCK';
  export const SELECT_NOTE = 'SELECT_NOTE';
  export const START_UPDATING_NOTE = 'START_UPDATING_NOTE';
  export const REMOVE_COLUMN = 'REMOVE_COLUMN';
  export const UPDATE_NOTE = 'UPDATE_NOTE';
  export const ADD_COLUMN = 'ADD_COLUMN';
  export const CHANGED_WRITING_TYPE = 'CHANGED_WRITING_TYPE';
  export const ADD_CHORD_TO_LYRIC = 'ADD_CHORD_TO_LYRIC';
  export const UPDATE_TITLE = 'UPDATE_TITLE';
  export const UPDATE_ARTIST = 'UPDATE_ARTIST';
  export const LOAD_TAB_INTO_STORE = 'LOAD_TAB_INTO_STORE';
  export const SAVE_TAB = 'SAVE_TAB';
  export const SAVE_TAB_SUCCESS = 'SAVE_TAB_SUCCESS';
  export const SAVE_TAB_FAILED = 'SAVE_TAB_FAILED';
  export const CHANGE_LINE_TUNING = 'CHANGE_LINE_TUNING';
  export const CLEAR_TAB_VALUES = 'CLEAR_TAB_VALUES';
  