parameters: (self, x, y, top_row=None, left_col=None)
docstring: Create worksheet panes and mark them as split.
  
          Args:
              x:        The position for the vertical split.
              y:        The position for the horizontal split.
              top_row:  Topmost visible row in scrolling region of pane.
              left_col: Leftmost visible row in scrolling region of pane.
  
          Returns:
              0:  Nothing.
docstring_summary: Create worksheet panes and mark them as split.
docstring_tokens: Create worksheet panes and mark them as split .
function: def split_panes(self, x, y, top_row=None, left_col=None):
          """
          Create worksheet panes and mark them as split.
  
          Args:
              x:        The position for the vertical split.
              y:        The position for the horizontal split.
              top_row:  Topmost visible row in scrolling region of pane.
              left_col: Leftmost visible row in scrolling region of pane.
  
          Returns:
              0:  Nothing.
  
          """
          # Same as freeze panes with a different pane type.
          self.freeze_panes(x, y, top_row, left_col, 2)
function_tokens: def split_panes ( self , x , y , top_row = None , left_col = None ) : # Same as freeze panes with a different pane type. self . freeze_panes ( x , y , top_row , left_col , 2 )