code: def erase_start_of_line (self): # <ESC>[1K
          '''Erases from the current cursor position to the start of the current
          line.'''
  
          self.fill_region (self.cur_r, 1, self.cur_r, self.cur_cf erase_start_of_line (self): # <ESC>[1K
          '''Erases from the current cursor position to the start of the current
          line.'''
  
          self.fill_region (self.cur_r, 1, self.cur_r, self.cur_c)
docs: Erases from the current cursor position to the start of the current
          line.