new_contents: #! /usr/bin/python2.7
  
  # tiling.py
  # Simple tiling for GTK
  #
  # `tiling.py width height x y -d 1`
  # All dimensions and coordinates are given as percentages of the screen,
  # so `tiling.py 50 50 25 25 -d 1` would give you a window that's 50% of your
  # screen's height and width, and positioned in the center of your screen.
  # The `-d` argument indicates the presence (1) or absence (0) of window
  # decorations. Remember to give the script executing right with
  # `chmod +x tiling`.
  #
  # Examples:
  #
  # Size Position       Hotkey              Command
  # ---------------------------------------------------------------
  # 70 % TOP            <Super>Up           tiling.py 100 70 0 0 -d 0
  # 30 % BOTTOM         <Super>Down         tiling.py 100 30 0 70 -d 0
  # 60 % LEFT           <Super>Left         tiling.py 60 100 0 0 -d 0
  # 40 % RIGHT          <Super>Right        tiling.py 40 100 60 0 -d 0
  #
  # 28 % TOP LEFT       <Super><Alt>Page_Up tiling.py 28 50 0 0 -d 0
  # 28 % BOTTOM LEFT    <Super><Alt>Left    tiling.py 28 50 0 50 -d 0
  # 28 % LEFT           <Super>Page_Up      tiling.py 28 100 0 0 -d 0
  # 72 % RIGHT          <Super>Page_Down    tiling.py 72 100 28 0 -d 0
  #
  # 74 % CENTER         <Super><Alt>Up      tiling.py 74 74 13 13 -d 1
  # 100 % CENTER        <Super><Alt>Down    tiling.py 100 100 0 0 -d 1
  #
  # By Sjaak van den Berg
  # @svdb
  
  from gtk.gdk import *
  import argparse
  
  TITLE_BAR = 22  # Put the height of your title bar here
  
  # Parse the command line arguments
  
  parser = argparse.ArgumentParser(description="Simple tiling for GTK")
  parser.add_argument("w", type=int, help="Frame width (in screen %)")
  parser.add_argument("h", type=int, help="Frame height (in screen %)")
  parser.add_argument("x", type=int, help="Frame x coordinate (in screen %)")
  parser.add_argument("y", type=int, help="Frame y coordinate (in screen %)")
  parser.add_argument("-d", type=int, choices=[0, 1], default=1,
                      help="1 for window decorations, 0 for none")
  args = parser.parse_args()
  
  win = window_foreign_new((get_default_root_window()
                            .property_get('_NET_ACTIVE_WINDOW')[2][0]))
  state = win.property_get('_NET_WM_STATE')[2]
  
  # Get the screen's width and height
  
  screen_width = screen_width()
  screen_height = screen_height()
  
  # Calculate the frame dimensions and location in pixels
  
  w = int(round(args.w / 100.0 * screen_width))
  h = int(round(args.h / 100.0 * screen_height))
  x = int(round(args.x / 100.0 * screen_width))
  y = int(round(args.y / 100.0 * screen_height))
  
  # Check whether decorations are desired
  
  if args.d == 1:
      win.set_decorations(DECOR_TITLE)  # or DECOR_ALL for all decorations
      win.move_resize(x, y, w, (h - TITLE_BAR))
  if args.d == 0:
      win.set_decorations(0)
      win.move_resize(x, y, w, h)
  
  # Apply changes to window
  
  window_process_all_updates()
  flush()
  
subject: Add tiling.py