diff --git a/examples/frotz.prez b/examples/frotz.prez
new file mode 100644
index 0000000..a437be9
--- /dev/null
+++ b/examples/frotz.prez
@@ -0,0 +1,86 @@
+
+rComment("""
+FROTZ V2.55
+An interpreter for all Infocom and other Z-Machine games.
+Complies with the Z-Machine Standard version 1.1.
+
+Originally written by Stefan Jokisch in 1995-1997.
+Ported to Unix by Galen Hazelwood.
+Reference code Unix and DOS ports are maintained by David Griffith.
+IIgs .console port by Kelvin Sherlock.
+
+Frotz is free software; you can redistribute it and/or modify it \
+under the terms of the GNU General Public License as published by \
+the Free Software Foundation; either version 2 of the License, or \
+(at your option) any later version.
+""")
+
+
+rVersion( '0.0.0a2', verUS, "Frotz 2.55", "Kelvin Sherlock\nDavid Griffith, et alia")
+
+rToolStartup(
+	mode640 | fFastPortAware | fUseShadowing,
+	3, (4, 0x0308), 5, 6, 11, 14, 15, 16, 18, 20, 21, 22, 23, 27, 28, 30,
+	export="kStartStop"
+)
+
+rMenuBar(
+  rMenu("@",
+    rMenuItem("About Frotz…", export="kAboutMenuItem"),
+    rMenuItem("Preferences…", ",", export="kPreferencesMenuItem"),
+    DividerMenuItem(),
+    export="kAppleMenu"
+  ),
+  rMenu(" File ",
+    # rMenuItem("New ", "Nn", export="kNewMenuItem"),
+    rMenuItem("Open…", "Oo", export="kOpenMenuItem"),
+    rMenuItem("Restart", "Rr", export="kRestartMenuItem"),
+    # rMenuItem("Save", "Ss", disabled=True, export="kSaveMenuItem"),
+    # DividerMenuItem(),
+    # rMenuItem("Close", "Ww", id=0xff, export="kCloseMenuItem"),
+    DividerMenuItem(),
+    rMenuItem("Quit", "Qq", export="kQuitMenuItem"),
+    export = "kFileMenu"
+  ),
+  rMenu(" Edit ",
+    UndoMenuItem(), # shortcut for doing it manually,
+    DividerMenuItem(),
+    CutMenuItem(),
+    CopyMenuItem(),
+    PasteMenuItem(),
+    ClearMenuItem(),
+    export = "kEditMenu"
+  ),
+  export = "kMenuBar"
+)
+
+AboutRect = rect(x = 0, y = 0, height = 100, width = 400)
+
+rWindParam1(
+
+	AboutRect.center(), None,
+
+	rStatTextControl(
+
+		AboutRect,
+
+		rTextForLETextBox2(
+			TBCenterJust,
+			TBFont, TBVenice, b"\x00", b"\x18", # Venice 24-point
+			"Frotz",
+			TBFont, TBMonaco, b"\x00", b"\x09", # monaco, 9-point
+			"\nv 2.55\n",
+			"Stefan Jokisch, Galen Hazel, David Griffith, et alia\n",
+			"IIgs version by Kelvin Sherlock (alpha 2)"
+		)	
+
+	),
+
+	frameBits = fVis,
+	export = "kAboutWindow"
+)
+
+
+
+
+
diff --git a/test.prez b/examples/test.prez
similarity index 100%
rename from test.prez
rename to examples/test.prez
diff --git a/prez.py b/prez.py
new file mode 100644
index 0000000..8adddec
--- /dev/null
+++ b/prez.py
@@ -0,0 +1,5 @@
+# this exists so we can "python3 prez.py" while developing.
+
+if __name__ == '__main__':
+	from prez.cli import main
+	main()
diff --git a/prez/__init__.py b/prez/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/base.py b/prez/base.py
similarity index 98%
rename from base.py
rename to prez/base.py
index 6d1ce60..22bb1fc 100644
--- a/base.py
+++ b/prez/base.py
@@ -1,12 +1,11 @@
 import struct
-from bisect import bisect_left
-from rect import *
-from utils import *
 import sys
+from bisect import bisect_left
 
-from resource_writer import ResourceWriter
-
-from constants import *
+from . rect import *
+from . utils import *
+from . resource_writer import ResourceWriter
+from . constants import *
 
 __all__ = ["rObject", "rText", "rTextBlock", "rTextForLETextBox2", 
 	"rAlertString", "rErrorString", "rComment", "rPString", 
diff --git a/cli.py b/prez/cli.py
similarity index 63%
rename from cli.py
rename to prez/cli.py
index b4207b6..254e40d 100644
--- a/cli.py
+++ b/prez/cli.py
@@ -3,10 +3,12 @@ import sys
 import io
 import argparse
 import time
-from open_rfork import open_rfork
 import traceback
+import importlib
+
+from . open_rfork import open_rfork
+from . base import rObject
 
-from base import rObject
 
 # from base import *
 # from window import *
@@ -19,20 +21,21 @@ from base import rObject
 def rez_scope():
 	# import all the resource types and constants into
 	# a dictionary to be the exec() local scope
-	import base
-	import window
-	import control
-	import menu
-	import sound
-	import rect
-	import version
-	import tool_startup
-	import icon
-	import constants
+	# import prez.base
+	# import prez.window
+	# import prez.control
+	# import prez.menu
+	# import prez.sound
+	# import prez.rect
+	# import prez.version
+	# import prez.tool_startup
+	# import prez.icon
+	# import prez.constants
 
 	# could do: mod = importlib.import_module("base"), etc.
 	scope = {}
-	for mod in (base, window, control, menu, sound, rect, version, tool_startup, icon, constants):
+	for m in ('base', 'window', 'control', 'menu', 'sound', 'rect', 'version', 'tool_startup', 'icon', 'constants'):
+		mod = importlib.import_module('.' + m, 'prez')
 		if hasattr(mod, '__all__'): keys = mod.__all__
 		else: keys = [x for x in dir(mod) if x[0] != '_']
 
@@ -56,20 +59,20 @@ def execute(filename, scope):
 		print(traceback.format_exc())
 		return False
 
-if __name__ == '__main__':
+def main():
+
 	p = argparse.ArgumentParser(prog='prez')
 	p.add_argument('files', metavar='file', type=str, nargs='+')
 	p.add_argument('--rez', action='store_true', help="Generate REZ code")
-	p.add_argument('-x', action="store_true", help="Generate REZ data")
+	p.add_argument('--hex', action="store_true", help="Generate REZ data")
 
 	p.add_argument('-D', type=str, nargs='+', help='define a variable')
-	p.add_argument('--df', action="store_true", help="Write to a regular file")
+	p.add_argument('--data-fork', action="store_true", help="Write to a regular file")
 	p.add_argument('-o', metavar='file', type=str, help="Specify output file")
 
 	opts = p.parse_args()
 
-
-	df = opts.df or not sys.platform in ("win32", "darwin")
+	opts.data_fork = opts.data_fork or not sys.platform in ("win32", "darwin")
 
 
 	scope = rez_scope()
@@ -81,19 +84,20 @@ if __name__ == '__main__':
 	if errors > 0 : sys.exit(1)
 
 	if not opts.o: opts.rez = True
-	if opts.x: opts.rez = True
 
-	if df or opts.rez:
-		open_rfork = io.open
-
-	if opts.rez:
+	if opts.rez or opts.hex:
 		print("/* Generated on {} */".format(time.ctime()))
 		print('#include "types.rez"\n')
-		if opts.x: rObject.dump_hex()
+		if opts.hex: rObject.dump_hex()
 		else: rObject.dump_rez()
 	else:
-		with open_rfork(opts.o, "wb") as io:
-			rObject.save_resources(io)
+		opener = open_rfork
+		if opts.data_fork: opener = io.open
+		with opener(opts.o, "wb") as f:
+			rObject.save_resources(f)
 
 	rObject.dump_exports()
 	sys.exit(0)
+
+if __name__ == '__main__':
+	main()
diff --git a/colors.py b/prez/colors.py
similarity index 100%
rename from colors.py
rename to prez/colors.py
diff --git a/constants.py b/prez/constants.py
similarity index 100%
rename from constants.py
rename to prez/constants.py
diff --git a/control.py b/prez/control.py
similarity index 99%
rename from control.py
rename to prez/control.py
index 0c939f2..8ecc35d 100644
--- a/control.py
+++ b/prez/control.py
@@ -1,8 +1,9 @@
-from base import rObject, rList, rPString, rTextForLETextBox2
 import struct
-from rect import *
-from colors import *
-from utils import *
+
+from . base import rObject, rList, rPString, rTextForLETextBox2
+from . rect import *
+from . colors import *
+from . utils import *
 
 
 __all__ = [
diff --git a/icon.py b/prez/icon.py
similarity index 98%
rename from icon.py
rename to prez/icon.py
index 66e0817..13cf0fd 100644
--- a/icon.py
+++ b/prez/icon.py
@@ -1,6 +1,7 @@
-from base import rObject
 import struct
 
+from . base import rObject
+
 
 __all__ = ["rIcon"]
 
diff --git a/key_equivalent.py b/prez/key_equivalent.py
similarity index 98%
rename from key_equivalent.py
rename to prez/key_equivalent.py
index 102429f..21d7730 100644
--- a/key_equivalent.py
+++ b/prez/key_equivalent.py
@@ -1,8 +1,9 @@
 # key equivalants
 import enum
-from utils import *
 import struct
 
+from . utils import *
+
 __all__ = ["KeyEquivalent"]
 
 def export_enum(cls):
diff --git a/menu.py b/prez/menu.py
similarity index 99%
rename from menu.py
rename to prez/menu.py
index f8350b5..a41c16e 100644
--- a/menu.py
+++ b/prez/menu.py
@@ -1,10 +1,11 @@
-
-from base import *
-from utils import *
-from icon import rIcon
 import struct
 import enum
 
+from . base import *
+from . utils import *
+from . icon import rIcon
+
+
 __all__ = [
 	'rMenuBar',
 	'rMenu',
diff --git a/open_rfork.py b/prez/open_rfork.py
similarity index 100%
rename from open_rfork.py
rename to prez/open_rfork.py
diff --git a/rect.py b/prez/rect.py
similarity index 95%
rename from rect.py
rename to prez/rect.py
index 36e17ac..f59b0be 100644
--- a/rect.py
+++ b/prez/rect.py
@@ -104,7 +104,7 @@ class size_class:
 		self.width = 0
 
 		if len(args) == 2:
-			self.height, self.width = args
+			self._assign(*args)
 			return
 
 		if len(args) == 1:
@@ -115,7 +115,7 @@ class size_class:
 				return
 
 			if is_listy(other) and len(other) == 2:
-				self.height, self.width = other
+				self._assign(*other)
 				return
 
 		if not args:
@@ -126,9 +126,22 @@ class size_class:
 
 		raise ValueError("bad size parameter")
 
+	def _assign(self, height, width):
+		self.height = height
+		self.width = width
+
 	def __eq__(self, other):
 		return type(other) == size_class and self.height == other.height and self.width == other.width
 
+	def __str__(self):
+		return "{{ {:d}, {:d} }}".format(self.height, self.width)
+
+	def __bytes__(self):
+		return struct.pack("2H", self.height, self.width)
+
+	def __iter__(self):
+		return (self.height, self.width).__iter__()
+
 
 def old_size(*args, height=None, width=None):
 
diff --git a/resource_writer.py b/prez/resource_writer.py
similarity index 100%
rename from resource_writer.py
rename to prez/resource_writer.py
diff --git a/rezpy.py b/prez/rezpy.py
similarity index 100%
rename from rezpy.py
rename to prez/rezpy.py
diff --git a/sound.py b/prez/sound.py
similarity index 99%
rename from sound.py
rename to prez/sound.py
index d50d335..d7c43ec 100644
--- a/sound.py
+++ b/prez/sound.py
@@ -1,5 +1,3 @@
-
-from base import rObject
 import audioop
 import struct
 import re
@@ -7,6 +5,8 @@ import sys
 import os
 from math import log2
 
+from . base import rObject
+
 __all__ = ["rSoundSample"]
 
 # See: IIgs TechNote #76 Miscellaneous Resource Formats
diff --git a/tool_startup.py b/prez/tool_startup.py
similarity index 97%
rename from tool_startup.py
rename to prez/tool_startup.py
index a75a3b0..812f05e 100644
--- a/tool_startup.py
+++ b/prez/tool_startup.py
@@ -1,9 +1,10 @@
-
-from base import rObject
-from utils import *
 import enum
 import struct
 
+from . base import rObject
+from . utils import *
+
+
 __all__ = ["rToolStartup"]
 
 # can't be in utils since that's a different __all__
diff --git a/utils.py b/prez/utils.py
similarity index 100%
rename from utils.py
rename to prez/utils.py
diff --git a/version.py b/prez/version.py
similarity index 98%
rename from version.py
rename to prez/version.py
index 73dd583..9b9818a 100644
--- a/version.py
+++ b/prez/version.py
@@ -1,10 +1,10 @@
-
-from base import rObject
-from utils import *
 import enum
 import struct
 import re
 
+from . base import rObject
+from . utils import *
+
 __all__ = ["rVersion"]
 
 
diff --git a/window.py b/prez/window.py
similarity index 97%
rename from window.py
rename to prez/window.py
index eed9a37..6e84701 100644
--- a/window.py
+++ b/prez/window.py
@@ -1,13 +1,12 @@
-from base import *
-from control import rControlTemplate, rControlList
-from utils import *
-
 import struct
 
+from . base import *
+from . control import rControlTemplate, rControlList
+from . utils import *
+
+
 __all__ = ['rWindParam1']
 
-
-
 fHilited            = 0x0001
 fZoomed             = 0x0002
 fAllocated          = 0x0004
@@ -37,7 +36,6 @@ class rWindParam1(rObject):
 	rType = 0x800e
 
 	def __init__(self, position, title=None, *controls, 
-
 		frameBits = 0,
 		refCon = 0,
 		zoomRect = (0, 0, 0, 0),
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..2ae15ac
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,11 @@
+from setuptools import setup
+
+setup(
+	name = 'prez',
+	packages = ['prez'],
+	author = 'Kelvin Sherlock',
+	entry_points = {
+		'console_scripts': ['prez=prez.cli:main']
+
+	},
+)
\ No newline at end of file