Text.redraw_all(Editor_state)
    Text.redraw_all(Editor_state)

  Cache['foo'] = {data=load_from_disk('foo')}
  Cache['foo2'] = {data=load_from_disk('foo2')}

  Cache['foo'] = {lines=load_from_disk('foo'), left=0, right=Display_settings.column_width}
  Cache['foo2'] = {lines=load_from_disk('foo2'), left=0, right=Display_settings.column_width}

  for _,line in ipairs(file.data) do

  file.text_line_cache = {}
  for i=1,#file.lines do
    local line = file.lines[i]
    file.text_line_cache[i] = {}

      Text.compute_fragments(line, 0, Display_settings.column_width)
      Text.populate_screen_line_starting_pos(line, 0, Display_settings.column_width)

      Text.compute_fragments(file, i)
      Text.populate_screen_line_starting_pos(file, i)
      y = y + Line_height*#file.text_line_cache[i].screen_line_starting_pos

      y = y + Drawing.pixels(line.h, Display_settings.column_width) + Drawing_padding_height

    y = y + line_height(line, 0, Display_settings.column_width)

  result.lines = Cache[id].data

  result.lines = Cache[id].lines
  result.text_line_cache = deepcopy(Cache[id].text_line_cache)

      if State.show_cursor then
        button('draw', {x=State.left - Margin_left + 4,y=y+4, w=12,h=12, color={1,1,0},
--?           icon = icon.insert_drawing,  -- TODO
          onpress1 = function()
                       Drawing.before = snapshot(State, line_index-1, line_index)
                       table.insert(State.lines, line_index, {mode='drawing', y=y, h=256/2, points={}, shapes={}, pending={}})
                       if State.cursor1.line >= line_index then
                         State.cursor1.line = State.cursor1.line+1
                       end
                       schedule_save(State)
                       record_undo_event(State, {before=Drawing.before, after=snapshot(State, line_index-1, line_index+1)})
                     end,
        })
      end

      if line.data == '' then

      if State.show_cursor and line.data == '' then

        button('draw', {x=4,y=y+4, w=12,h=12, color={1,1,0},
          icon = icon.insert_drawing,

        button('draw', {x=State.left - Margin_left + 4, y=y+4, w=12,h=12, color={1,1,0},
--?           icon = icon.insert_drawing,  -- TODO