-- return values:
--  y coordinate drawn until in px
--  position of start of final screen line drawn

  local screen_line_starting_pos = 1

        if y + math.floor(15*Zoom) > Screen_height then
          return y, screen_line_starting_pos
        end
        screen_line_starting_pos = pos

  return y

  return y, screen_line_starting_pos

        y = Text.draw(line, Line_width, line_index)

        y, Screen_bottom1.pos = Text.draw(line, Line_width, line_index)

--?   print('screen bottom: '..tostring(Screen_bottom1.pos)..' in '..tostring(Lines[Screen_bottom1.line].data))

    Screen_top1.pos = 1

    Screen_top1.pos = Screen_bottom1.pos