diff --git a/constants.py b/constants.py
index 31673f08..2aa27934 100644
--- a/constants.py
+++ b/constants.py
@@ -18,7 +18,7 @@ MEDIUM_QUALITY_CAMERA_CONFIG = {
 }
 
 LOW_QUALITY_CAMERA_CONFIG = {
-    "pixel_shape" : (480, 853),
+    "pixel_shape" : (480, 854),
 }
 
 DEFAULT_POINT_DENSITY_2D = 25 
diff --git a/example_scenes.py b/example_scenes.py
index 1340f3a5..2a282109 100644
--- a/example_scenes.py
+++ b/example_scenes.py
@@ -24,13 +24,15 @@ from mobject.tex_mobject import *
 from mobject.vectorized_mobject import *
 
 ## To watch one of these scenes, run the following:
-## python extract_scenes.py -p file_name <SceneName>
+## python extract_scene.py -p file_name <SceneName>
 
 class SquareToCircle(Scene):
     def construct(self):
         circle = Circle()
+        circle.shift(np.array([10, -5, 0]))
         square = Square()
         square.rotate(np.pi/8)
+        square.shift(np.array([10, -5, 0]))
         self.play(ShowCreation(square))
         self.play(Transform(square, circle))
         self.dither()
diff --git a/helpers.py b/helpers.py
index 2683bd6c..d500b7a9 100644
--- a/helpers.py
+++ b/helpers.py
@@ -170,7 +170,7 @@ def compass_directions(n = 4, start_vect = RIGHT):
 def partial_bezier_points(points, a, b):
     """
     Given an array of points which define 
-    a bezier curve, and two numbres 0<=a<b<=1,
+    a bezier curve, and two numbers 0<=a<b<=1,
     return an array of the same size, which 
     describes the portion of the original bezier
     curve on the interval [a, b].
@@ -366,7 +366,7 @@ def straight_path(start_points, end_points, alpha):
 def path_along_arc(arc_angle, axis = OUT):
     """
     If vect is vector from start to end, [vect[:,1], -vect[:,0]] is 
-    perpendicualr to vect in the left direction.
+    perpendicular to vect in the left direction.
     """
     if abs(arc_angle) < STRAIGHT_PATH_THRESHOLD:
         return straight_path
@@ -405,7 +405,7 @@ def initials(name, sep_values = [" ", "_"]):
         for s in re.split("|".join(sep_values), name)
     ])
 
-def cammel_case_initials(name):
+def camel_case_initials(name):
     return filter(lambda c : c.isupper(), name)
 
 ################################################
@@ -541,7 +541,7 @@ def thick_diagonal(dim, thickness = 2):
 
 def rotation_matrix(angle, axis):
     """
-    Rotation in R^3 about a specified axess of rotation.
+    Rotation in R^3 about a specified axis of rotation.
     """
     about_z = rotation_about_z(angle)
     z_to_axis = z_to_vector(axis)
diff --git a/mobject/svg_mobject.py b/mobject/svg_mobject.py
index 0c90ffef..817e3b92 100644
--- a/mobject/svg_mobject.py
+++ b/mobject/svg_mobject.py
@@ -24,7 +24,7 @@ class SVGMobject(VMobject):
         "stroke_width" : 0,
         "fill_opacity" : 1,
         # "fill_color" : LIGHT_GREY,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
     }
     def __init__(self, **kwargs):
         digest_config(self, kwargs, locals())
diff --git a/mobject/tex_mobject.py b/mobject/tex_mobject.py
index ede713fd..bfec9916 100644
--- a/mobject/tex_mobject.py
+++ b/mobject/tex_mobject.py
@@ -36,7 +36,7 @@ class TexMobject(SVGMobject):
         "arg_separator"     : " ",
         "height" : None,
         "organize_left_to_right" : False,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "alignment" : "",
     }
     def __init__(self, *args, **kwargs):
diff --git a/mobject/vectorized_mobject.py b/mobject/vectorized_mobject.py
index 32998aac..d6d53441 100644
--- a/mobject/vectorized_mobject.py
+++ b/mobject/vectorized_mobject.py
@@ -1,6 +1,6 @@
 import re
 
-from .mobject import Mobject
+from mobject import Mobject
 
 from helpers import *
 
@@ -15,7 +15,7 @@ class VMobject(Mobject):
         "close_new_points" : False,
         "mark_paths_closed" : False,
         "considered_smooth" : True,
-        "propogate_style_to_family" : False,
+        "propagate_style_to_family" : False,
     }
 
     ## Colors
@@ -25,7 +25,7 @@ class VMobject(Mobject):
            stroke_width = self.stroke_width,
            fill_color = self.fill_color or self.color, 
            fill_opacity = self.fill_opacity,
-           family = self.propogate_style_to_family
+           family = self.propagate_style_to_family
         )
         return self
 
@@ -199,9 +199,9 @@ class VMobject(Mobject):
 
     def add_subpath(self, points):
         """
-        A VMobject is meant to represnt
+        A VMobject is meant to represent
         a single "path", in the svg sense of the word.
-        However, one such path may really consit of separate
+        However, one such path may really consist of separate
         continuous components if there is a move_to command.
 
         These other portions of the path will be treated as submobjects,
@@ -349,9 +349,9 @@ class VMobject(Mobject):
     def pointwise_become_partial(self, mobject, a, b):
         assert(isinstance(mobject, VMobject))
         #Partial curve includes three portions:
-        #-A middle section, which matches the curve exactly
-        #-A start, which is some ending portion of an inner cubic
-        #-An end, which is the starting portion of a later inner cubic
+        #- A middle section, which matches the curve exactly
+        #- A start, which is some ending portion of an inner cubic
+        #- An end, which is the starting portion of a later inner cubic
         if a <= 0 and b >= 1:
             self.set_points(mobject.points)
             self.mark_paths_closed = mobject.mark_paths_closed
diff --git a/myports.txt b/myports.txt
new file mode 100644
index 00000000..80593eef
--- /dev/null
+++ b/myports.txt
@@ -0,0 +1,219 @@
+  apr @1.5.2_1 (active) platform='darwin 15' archs='x86_64' date='2016-01-06T23:13:35+0100'
+  apr-util @1.5.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-01-06T23:20:17+0100'
+  autoconf @2.69_5 (active) platform='darwin 15' archs='noarch' date='2015-12-29T08:56:03+0100'
+  automake @1.15_1 (active) platform='darwin 15' archs='noarch' date='2015-12-29T08:56:12+0100'
+  bzip2 @1.0.6_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:04:35+0100'
+  cairo @1.14.6_0+quartz+x11 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:28+0200'
+  cctools @877.8_0+llvm37 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:25+0200'
+  cmake @3.4.1_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:52:54+0100'
+  cmake @3.5.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:11+0200'
+  curl @7.46.0_0+ssl platform='darwin 15' archs='x86_64' date='2016-01-06T23:46:52+0100'
+  curl @7.49.1_0+ssl (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:47:58+0200'
+  curl-ca-bundle @7.45.0_0 platform='darwin 15' archs='noarch' date='2015-12-29T09:00:36+0100'
+  curl-ca-bundle @7.46.0_0 platform='darwin 15' archs='noarch' date='2015-12-29T11:04:17+0100'
+  curl-ca-bundle @7.49.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T13:47:57+0200'
+  cyrus-sasl2 @2.1.26_5+kerberos platform='darwin 15' archs='x86_64' date='2016-01-06T23:26:38+0100'
+  cyrus-sasl2 @2.1.26_6+kerberos (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:16+0200'
+  cython_select @0.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:11:29+0200'
+  db46 @4.6.21_10 (active) platform='darwin 15' archs='x86_64' date='2016-01-06T23:18:26+0100'
+  db48 @4.8.30_4 (active) platform='darwin 15' archs='x86_64' date='2016-01-06T23:22:12+0100'
+  dbus @1.10.8_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:13:07+0200'
+  dbus-glib @0.106_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:14:36+0200'
+  dbus-python27 @1.2.0_2 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:14:36+0200'
+  desktop-file-utils @0.22_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:09:21+0100'
+  expat @2.1.0_0 platform='darwin 15' archs='x86_64' date='2015-12-29T08:47:39+0100'
+  expat @2.1.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:47:59+0200'
+  ffmpeg @3.0.2_0+gpl2+x11 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:52:43+0200'
+  fftw-3 @3.3.4_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:32+0200'
+  flac @1.3.1_2 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:27+0200'
+  fontconfig @2.11.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:54:29+0200'
+  freetype @2.6.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:30+0200'
+  fribidi @0.19.7_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:22+0200'
+  gdbm @1.11_1 platform='darwin 15' archs='x86_64' date='2015-12-29T08:56:32+0100'
+  gdbm @1.12_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:16+0200'
+  gettext @0.19.6_0 platform='darwin 15' archs='x86_64' date='2015-12-29T08:55:03+0100'
+  gettext @0.19.7_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:02+0200'
+  glib2 @2.46.2_0 platform='darwin 15' archs='x86_64' date='2015-12-29T09:08:07+0100'
+  glib2 @2.48.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:18+0200'
+  gmake @4.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:23+0200'
+  gmp @6.0.0_1 platform='darwin 15' archs='x86_64' date='2015-12-29T09:01:55+0100'
+  gmp @6.1.0_1 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T11:05:57+0100'
+  gnutls @3.3.19_0 platform='darwin 15' archs='x86_64' date='2015-12-29T11:10:40+0100'
+  gnutls @3.4.12_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:24+0200'
+  gperf @3.0.4_2 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T08:47:50+0100'
+  hydra @7.5_2 platform='darwin 15' archs='x86_64' date='2016-01-06T23:53:23+0100'
+  hydra @7.5_3 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:32+0200'
+  ipython2_select @0.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:15+0200'
+  ipython_select @0.4_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:15+0200'
+  isl @0.14.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:26+0200'
+  jbigkit @2.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:26+0200'
+  jpeg @9a_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:18+0200'
+  kerberos5 @1.13.2_2 platform='darwin 15' archs='x86_64' date='2016-01-06T23:25:49+0100'
+  kerberos5 @1.14.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:15+0200'
+  lame @3.99.5_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:23+0200'
+  lcms2 @2.7_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:14:37+0200'
+  ld64 @2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:27+0200'
+  ld64-latest @253.9_0+llvm37 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:27+0200'
+  libarchive @3.1.2_1 platform='darwin 15' archs='x86_64' date='2016-01-06T23:48:20+0100'
+  libarchive @3.1.2_2 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:08+0200'
+  libass @0.13.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:23+0200'
+  libbluray @0.9.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:24+0200'
+  libcomerr @1.42.13_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:20:43+0100'
+  libcomerr @1.43_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:14+0200'
+  libcxx @3.7.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:33+0200'
+  libedit @20150325-3.1_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:04:53+0100'
+  libevent @2.0.22_1 platform='darwin 15' archs='x86_64' date='2016-01-06T23:58:08+0100'
+  libevent @2.0.22_2 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:33+0200'
+  libffi @3.2.1_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:04:31+0100'
+  libgcc @6.1.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:29+0200'
+  libiconv @1.14_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T08:48:36+0100'
+  libidn @1.32_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:02:40+0100'
+  libmagic @5.25_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:27:06+0100'
+  libmagic @5.27_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:34+0200'
+  libmikmod @3.2.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:28+0200'
+  libmng @2.0.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:14:38+0200'
+  libmodplug @0.8.8.5_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:24+0200'
+  libmpc @1.0.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:28+0200'
+  libogg @1.3.2_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:27+0200'
+  libopus @1.1.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:24+0200'
+  libpcap @1.7.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-01-06T23:13:47+0100'
+  libpixman @0.34.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:27+0200'
+  libpng @1.6.22_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:19+0200'
+  libsdl @1.2.15_3+x11 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:25+0200'
+  libsdl_image @1.2.12_5 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:26+0200'
+  libsdl_mixer @1.2.12_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:30+0200'
+  libsdl_ttf @2.0.11_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:32+0200'
+  libssh @0.7.0_2+kerberos5 platform='darwin 15' archs='x86_64' date='2016-01-06T23:53:16+0100'
+  libssh @0.7.3_1+kerberos5 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:29+0200'
+  libtasn1 @4.7_0 platform='darwin 15' archs='x86_64' date='2015-12-29T09:03:04+0100'
+  libtasn1 @4.8_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:22+0200'
+  libtheora @1.1.1_2 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:24+0200'
+  libtool @2.4.6_2 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:03:20+0100'
+  libvorbis @1.3.5_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:28+0200'
+  libvpx @1.4.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:25+0200'
+  libxml2 @2.9.2_2 platform='darwin 15' archs='x86_64' date='2015-12-29T09:10:16+0100'
+  libxml2 @2.9.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:07+0200'
+  libxslt @1.1.28_1 platform='darwin 15' archs='x86_64' date='2015-12-29T09:10:48+0100'
+  libxslt @1.1.29_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:23+0200'
+  llvm-3.7 @3.7.1_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:09:55+0200'
+  llvm_select @1.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:33+0200'
+  lzo2 @2.09_0 (active) platform='darwin 15' archs='x86_64' date='2016-01-06T23:47:27+0100'
+  mpfr @3.1.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:28+0200'
+  ncurses @6.0_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T08:49:33+0100'
+  nettle @3.1.1_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:04:13+0100'
+  nmap @7.01_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:31:09+0100'
+  nmap @7.12_0+pcre+ssl+subversion (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:27+0200'
+  nosetests_select @0.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:11:31+0200'
+  openjpeg @2.1.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:26+0200'
+  openssl @1.0.2e_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:16:42+0100'
+  openssl @1.0.2h_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:47:54+0200'
+  orc @0.4.25_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:26+0200'
+  p11-kit @0.22.1_0 platform='darwin 15' archs='x86_64' date='2015-12-29T09:12:07+0100'
+  p11-kit @0.23.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:23+0200'
+  pcre @8.37_0 platform='darwin 15' archs='x86_64' date='2015-12-29T09:05:51+0100'
+  pcre @8.38_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T11:06:47+0100'
+  perl5 @5.16.3_0+perl5_16 platform='darwin 15' archs='noarch' date='2015-12-29T09:00:31+0100'
+  perl5 @5.22.1_0+perl5_16 platform='darwin 15' archs='noarch' date='2015-12-29T11:04:13+0100'
+  perl5 @5.22.2_0+perl5_22 (active) platform='darwin 15' archs='noarch' date='2016-06-05T13:50:37+0200'
+  perl5.16 @5.16.3_1 platform='darwin 15' archs='x86_64' date='2015-12-29T09:00:25+0100'
+  perl5.16 @5.16.3_2 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T11:04:05+0100'
+  perl5.22 @5.22.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:33+0200'
+  pkgconfig @0.28_0 platform='darwin 15' archs='x86_64' date='2015-12-29T09:08:59+0100'
+  pkgconfig @0.29.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:38+0200'
+  popt @1.16_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:09:16+0100'
+  py27-altgraph @0.12_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:30+0200'
+  py27-appnope @0.1.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:15+0200'
+  py27-apptools @4.3.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:22:25+0200'
+  py27-backports @1.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:16+0200'
+  py27-backports-shutil_get_terminal_size @1.0.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:17+0200'
+  py27-backports-ssl_match_hostname @3.5.0.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:43+0200'
+  py27-backports_abc @0.4_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:43+0200'
+  py27-cairo @1.10.0_3 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:28+0200'
+  py27-certifi @2016.02.28_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:43+0200'
+  py27-configobj @5.0.6_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:13:05+0200'
+  py27-cycler @0.10.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:28+0200'
+  py27-cython @0.24_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:30+0200'
+  py27-dateutil @2.5.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:30+0200'
+  py27-decorator @4.0.9_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:18+0200'
+  py27-envisage @4.4.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:22:26+0200'
+  py27-game @1.9.1_8 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:42+0200'
+  py27-gnureadline @6.3.3_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:42:34+0200'
+  py27-ipython @4.2.0_1 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:37+0200'
+  py27-ipython_genutils @0.1.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:36+0200'
+  py27-macholib @1.7_1 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:31+0200'
+  py27-matplotlib @1.5.1_3+cairo (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:57:59+0200'
+  py27-mayavi @4.4.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:22:56+0200'
+  py27-modulegraph @0.12.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:30+0200'
+  py27-nose @1.3.7_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:11:32+0200'
+  py27-numpy @1.11.0_0+gfortran (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:11:33+0200'
+  py27-parsing @2.1.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:30+0200'
+  py27-pathlib2 @2.1.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:35+0200'
+  py27-pexpect @4.1.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:35+0200'
+  py27-pickleshare @0.7.2_1 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:35+0200'
+  py27-ptyprocess @0.5.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:42:35+0200'
+  py27-py2app @0.10_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:32+0200'
+  py27-pyface @5.0.0_0+pyqt4 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:22:09+0200'
+  py27-pygments @2.1.3_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:30:20+0200'
+  py27-pyobjc @3.0.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:37+0200'
+  py27-pyobjc-cocoa @3.0.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:42+0200'
+  py27-pyqt4 @4.11.4_4 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:22:01+0200'
+  py27-setuptools @21.2.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:11:31+0200'
+  py27-simplegeneric @0.8.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:36+0200'
+  py27-singledispatch @3.4.0.3_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:43+0200'
+  py27-sip @4.18_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:14:37+0200'
+  py27-six @1.10.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:32:30+0200'
+  py27-tornado @4.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:44+0200'
+  py27-traitlets @4.2.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:42:36+0200'
+  py27-traits @4.5.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:22:08+0200'
+  py27-traitsui @5.0.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:22:24+0200'
+  py27-tz @2016.4_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T18:56:29+0200'
+  python2_select @0.0_1 (active) platform='darwin 15' archs='noarch' date='2016-01-06T23:22:20+0100'
+  python27 @2.7.11_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:24:25+0100'
+  python27 @2.7.11_2 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:42+0200'
+  python_select @0.3_6 (active) platform='darwin 15' archs='noarch' date='2016-01-06T23:22:21+0100'
+  qhull @2015.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:45+0200'
+  qt4-mac @4.8.7_4 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:15:50+0200'
+  readline @6.3.003_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:39+0200'
+  schroedinger @1.0.11_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:27+0200'
+  scons @2.3.4_0 platform='darwin 15' archs='noarch' date='2016-01-06T23:27:10+0100'
+  scons @2.4.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T13:50:51+0200'
+  serf1 @1.3.4_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:27:18+0100'
+  serf1 @1.3.4_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:36+0200'
+  smpeg @0.4.4_9 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:29+0200'
+  soxr @0.1.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:27+0200'
+  speex @1.2rc1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:27+0200'
+  sqlite3 @3.9.2_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:19:11+0100'
+  sqlite3 @3.13.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:35+0200'
+  subversion @1.9.3_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:29:32+0100'
+  subversion @1.9.3_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:48:37+0200'
+  texinfo @6.1_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:28+0200'
+  tiff @4.0.6_1 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:26+0200'
+  tor @0.2.7.6_0 platform='darwin 15' archs='x86_64' date='2016-01-06T23:59:05+0100'
+  tor @0.2.7.6_3 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:52+0200'
+  torsocks @1.2_1 platform='darwin 15' archs='x86_64' date='2016-01-07T00:13:13+0100'
+  torsocks @2.1.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:55+0200'
+  vtk @7.0.0_0+python27 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:22:41+0200'
+  wget @1.17.1_0+ssl platform='darwin 15' archs='x86_64' date='2015-12-29T11:11:37+0100'
+  wget @1.17.1_1+ssl (active) platform='darwin 15' archs='x86_64' date='2016-06-05T13:50:56+0200'
+  x264 @20160119_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:30+0200'
+  xorg-fixesproto @5.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-06T22:46:30+0200'
+  xorg-kbproto @1.0.7_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:19+0200'
+  xorg-libpthread-stubs @0.3_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:20+0200'
+  xorg-libX11 @1.6.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:22+0200'
+  xorg-libXau @1.0.8_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:19+0200'
+  xorg-libxcb @1.12_1+python27 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:20+0200'
+  xorg-libXdmcp @1.1.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:20+0200'
+  xorg-libXext @1.3.3_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:24+0200'
+  xorg-libXfixes @5.0.2_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:30+0200'
+  xorg-libXrandr @1.5.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:24+0200'
+  xorg-randrproto @1.5.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:24+0200'
+  xorg-renderproto @0.11.1_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:24+0200'
+  xorg-xcb-proto @1.12_0+python27 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:20+0200'
+  xorg-xcb-util @0.4.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T18:56:27+0200'
+  xorg-xextproto @7.3.0_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:23+0200'
+  xorg-xproto @7.0.29_0 (active) platform='darwin 15' archs='noarch' date='2016-06-05T14:08:19+0200'
+  xrender @0.9.9_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-05T14:08:24+0200'
+  XviD @1.3.4_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:22+0200'
+  xz @5.2.2_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T08:55:50+0100'
+  yasm @1.3.0_0 (active) platform='darwin 15' archs='x86_64' date='2016-06-06T22:46:31+0200'
+  zlib @1.2.8_0 (active) platform='darwin 15' archs='x86_64' date='2015-12-29T09:05:00+0100'
diff --git a/old_projects/borsuk.py b/old_projects/borsuk.py
index 6f257e16..cd4b5a05 100644
--- a/old_projects/borsuk.py
+++ b/old_projects/borsuk.py
@@ -31,7 +31,7 @@ class Jewel(VMobject):
         "color" : WHITE,
         "fill_opacity" : 0.75,
         "stroke_width" : 0,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "height" : 0.5,
         "num_equator_points" : 5,
         "sun_vect" : OUT+LEFT+UP,
diff --git a/old_projects/crypto.py b/old_projects/crypto.py
index 0b4dfb1f..7d0da810 100644
--- a/old_projects/crypto.py
+++ b/old_projects/crypto.py
@@ -2974,7 +2974,7 @@ class IntroduceBlockChain(Scene):
         self.show_proofs_of_work()
         self.chain_blocks_together()
         self.mess_with_early_block()
-        self.propogate_hash_change()
+        self.propagate_hash_change()
         self.redo_proof_of_work()
         self.write_block_chain()
 
@@ -3144,7 +3144,7 @@ class IntroduceBlockChain(Scene):
 
         blocks.submobjects[:2] = blocks.submobjects[1::-1]
 
-    def propogate_hash_change(self):
+    def propagate_hash_change(self):
         prev_hashes = self.prev_hashes
 
         for block, prev_hash in zip(self.blocks, prev_hashes[1:]):
diff --git a/old_projects/efvgt.py b/old_projects/efvgt.py
index 0c6831e6..388f5815 100644
--- a/old_projects/efvgt.py
+++ b/old_projects/efvgt.py
@@ -3295,7 +3295,7 @@ class EmeraldLogo(SVGMobject):
         "file_name" : "emerald_logo",
         "stroke_width" : 0,
         "fill_opacity" : 1,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         # "helix_color" : "#439271",
         "helix_color" : GREEN_E,
     }
diff --git a/old_projects/fractal_dimension.py b/old_projects/fractal_dimension.py
index 35c93b84..01e76cd6 100644
--- a/old_projects/fractal_dimension.py
+++ b/old_projects/fractal_dimension.py
@@ -39,7 +39,7 @@ class Britain(SVGMobject):
         "stroke_width" : 0,
         "fill_color" : BLUE_D,
         "fill_opacity" : 1,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "height" : 5,
         "mark_paths_closed" : True,
     }
@@ -2887,7 +2887,7 @@ class AffirmLogo(SVGMobject):
         "fill_opacity" : 1,
         "stroke_color" : "#0FA0EA",
         "stroke_width" : 0,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "file_name" : "affirm_logo",
         "width" : 3,
     }
diff --git a/old_projects/triangle_of_power/triangle.py b/old_projects/triangle_of_power/triangle.py
index 3ed2a98a..ca53f75a 100644
--- a/old_projects/triangle_of_power/triangle.py
+++ b/old_projects/triangle_of_power/triangle.py
@@ -84,7 +84,7 @@ class TOP(VMobject):
         "triangle_height_to_number_height" : 3,
         "offset_multiple" : 1.5,
         "radius" : 1.5,
-        "propogate_style_to_family" : False,
+        "propagate_style_to_family" : False,
     }
     def __init__(self, x = None, y = None, z = None, **kwargs):
         digest_config(self, kwargs, locals())
diff --git a/requested.txt b/requested.txt
new file mode 100644
index 00000000..f01d0f70
--- /dev/null
+++ b/requested.txt
@@ -0,0 +1,17 @@
+ffmpeg
+hydra
+hydra
+nmap
+nmap
+py27-game
+py27-ipython
+py27-matplotlib
+py27-mayavi
+py27-pygments
+py27-six
+tor
+tor
+torsocks
+torsocks
+wget
+wget
diff --git a/restore_ports.tcl b/restore_ports.tcl
new file mode 100755
index 00000000..c4370709
--- /dev/null
+++ b/restore_ports.tcl
@@ -0,0 +1,287 @@
+#!/bin/sh
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
+# \
+if /usr/bin/which -s port-tclsh; then exec port-tclsh "$0" -i `which port-tclsh` "$@"; else exec /usr/bin/tclsh "$0" -i /usr/bin/tclsh "$@"; fi
+#
+# Install a list of ports given in the form produced by 'port installed', in
+# correct dependency order so as to preserve the selected variants.
+#
+# Todo:
+# Handle conflicting ports somehow
+# Once "good enough", integrate into port
+
+
+set MY_VERSION 0.1
+
+proc printUsage {} {
+   puts "Usage: $::argv0 \[-hV\] \[-p macports-prefix\] \[filename\]"
+   puts "   -h   This help"
+   puts "   -p   Use a different MacPorts prefix"
+   puts "        (defaults to /opt/local)"
+   puts "   -V   show version and MacPorts version being used"
+}
+
+
+proc dependenciesForPort {portName variantInfo} {
+   set dependencyList [list]
+   set portSearchResult [mportlookup $portName]
+   if {[llength $portSearchResult] < 2} {
+      ui_warn "Skipping $portName (not in the ports tree)"
+      return $dependencyList
+   }
+   array set portInfo [lindex $portSearchResult 1]
+   if {[catch {set mport [mportopen $portInfo(porturl) [list subport $portInfo(name)] $variantInfo]} result]} {
+      global errorInfo
+      puts stderr "$errorInfo"
+      return -code error "Unable to open port '$portName': $result"
+   }
+   array unset portInfo
+   array set portInfo [mportinfo $mport]
+   mportclose $mport
+   foreach dependencyType {depends_fetch depends_extract depends_build depends_lib depends_run} {
+      if {[info exists portInfo($dependencyType)] && [string length $portInfo($dependencyType)] > 0} {
+         foreach dependency $portInfo($dependencyType) {
+            lappend dependencyList [lindex [split $dependency :] end]
+         }
+      }
+   }
+
+   return $dependencyList
+}
+
+proc sort_ports {portList} {
+    array set port_installed {}
+    array set port_deps {}
+    array set port_in_list {}
+    
+    set newList [list]
+    foreach port $portList {
+        set name [lindex $port 0]
+        #ui_msg "name = $name"
+        set version [lindex $port 1]
+        set variants ""
+
+        if {[regexp {^@([^+]+?)(_(\d+)(([-+][^-+]+)*))?$} $version - - - - variantstr] && [info exists variantstr]} {
+            while 1 {
+                set nextplus [string last + $variantstr]
+                set nextminus [string last - $variantstr]
+                if {$nextplus > $nextminus} {
+                    set next $nextplus
+                    set sign +
+                } else {
+                    set next $nextminus
+                    set sign -
+                }
+                if {$next == -1} {
+                    break
+                }
+                set v [string range $variantstr [expr $next + 1] end]
+                lappend variants $v $sign
+                set variantstr [string range $variantstr 0 [expr $next - 1]]
+            }
+        }
+        #ui_msg "variants = $variants"
+        set active 0
+        if {[llength $port] > 2 && [lindex $port 2] == "(active)"} {
+            set active 1
+        }
+        #ui_msg "active = $active"
+
+        if {![info exists port_in_list($name)]} {
+            set port_in_list($name) 1
+            set port_installed($name) 0
+        } else {
+            incr port_in_list($name)
+        }
+        if {![info exists port_deps(${name},${variants})]} {
+            set port_deps(${name},${variants}) [dependenciesForPort $name $variants]
+        }
+        lappend newList [list $active $name $variants]
+    }
+
+    set operationList [list]
+    while {[llength $newList] > 0} {
+        set oldLen [llength $newList]
+        foreach port $newList {
+            foreach {active name variants} $port break
+            # ensure active versions are installed after inactive versions,
+            # since installing will also activate and we don't want to
+            # displace the active version
+            if {$active && $port_installed($name) < ($port_in_list($name) - 1)} {
+                continue
+            }
+            set installable 1
+            foreach dep $port_deps(${name},${variants}) {
+                # XXX maybe check dep is active here?
+                if {[info exists port_installed($dep)] && $port_installed($dep) == 0} {
+                    set installable 0
+                    break
+                }
+            }
+            if {$installable} {
+                lappend operationList [list $name $variants $active]
+                incr port_installed($name)
+                set index [lsearch $newList [list $active $name $variants]]
+                #ui_msg "deleting \"[list $active $name $variants]\" from list"
+                #ui_msg "list with element: $newList"
+                set newList [lreplace $newList $index $index]
+                #ui_msg "list without element: $newList"
+            }
+        }
+        if {[llength $newList] == $oldLen} {
+            ui_error "we appear to be stuck, exiting..."
+            return -code error "infinite loop"
+        }
+    }
+    
+    return $operationList
+}
+
+proc install_ports {operationList} {
+    foreach op $operationList {
+        set name [string trim [lindex $op 0]]
+        set variations [lindex $op 1]
+        set active [lindex $op 2]
+
+        if {!$active} {
+            set install_target install
+        } else {
+            set install_target activate
+        }
+
+        if {[catch {set res [mportlookup $name]} result]} {
+            global errorInfo
+            ui_debug "$errorInfo"
+            return -code error "lookup of portname $name failed: $result"
+        }
+        if {[llength $res] < 2} {
+            # not in the index, but we already warned about that earlier
+            continue
+        }
+        array unset portinfo
+        array set portinfo [lindex $res 1]
+        set porturl $portinfo(porturl)
+        
+        # XXX should explicitly turn off default variants that don't appear in the list
+        
+        if {[catch {set workername [mportopen $porturl [list subport $portinfo(name)] $variations]} result]} {
+            global errorInfo
+            puts stderr "$errorInfo"
+            return -code error "Unable to open port '$name': $result"
+        }
+        if {[catch {set result [mportexec $workername $install_target]} result]} {
+            global errorInfo
+            mportclose $workername
+            ui_msg "$errorInfo"
+            return -code error "Unable to execute target 'install' for port '$name': $result"
+        } else {
+            mportclose $workername
+        }
+        
+        # XXX some ports may be reactivated to fulfil dependencies - check again at the end?
+    }
+}
+
+proc read_portlist {filename} {
+    if {$filename == "-"} {
+        set infile stdin
+    } else {
+        set infile [open $filename r]
+    }
+    set data [read -nonewline $infile]
+    set portList [split $data \n]
+    close $infile
+    if {[lindex $portList 0] == "The following ports are currently installed:"} {
+        set portList [lrange $portList 1 end]
+    }
+    return $portList
+}
+
+# Begin
+
+set macportsPrefix /opt/local
+set showVersion 0
+array set ui_options {}
+
+set origArgv $::argv
+while {[string index [lindex $::argv 0] 0] == "-" } {
+   switch [string range [lindex $::argv 0] 1 end] {
+      h {
+         printUsage
+         exit 0
+      }
+      i {
+         set interp_path [lindex $::argv 1]
+         set ::argv [lrange $::argv 1 end]
+      }
+      p {
+         if {[llength $::argv] < 2} {
+            puts stderr "-p needs a path"
+            printUsage
+            exit 1
+         }
+         set macportsPrefix [lindex $::argv 1]
+         set ::argv [lrange $::argv 1 end]
+         set userPrefix 1
+      }
+      V {
+         set showVersion 1
+      }
+      v {
+        set ui_options(ports_verbose) yes
+      }
+      default {
+         puts stderr "Unknown option [lindex $::argv 0]"
+         printUsage
+         exit 1
+      }
+   }
+   set ::argv [lrange $::argv 1 end]
+}
+
+# check that default prefix exists
+if {![info exists userPrefix] && ![file isdirectory $macportsPrefix]} {
+    error "prefix '$macportsPrefix' does not exist; maybe you need to use the -p option?"
+}
+
+if {[info exists interp_path]} {
+    set prefixFromInterp [file dirname [file dirname $interp_path]]
+} else {
+    # presumably the user ran '/some/prefix/bin/port-tclsh restore_ports.tcl'
+    set prefixFromInterp ""
+    if {[info exists userPrefix]} {
+        error "the -p option cannot be used when running with an explicit interpreter (e.g. 'port-tclsh restore_ports.tcl') - run just './restore_ports.tcl' instead."
+    }
+}
+# make sure we're running in the port-tclsh associated with the correct prefix
+if {$prefixFromInterp ne "" && $prefixFromInterp ne $macportsPrefix} {
+    if {[file executable ${macportsPrefix}/bin/port-tclsh]} {
+        exec ${macportsPrefix}/bin/port-tclsh $argv0 -i ${macportsPrefix}/bin/port-tclsh {*}[lrange $origArgv 2 end] <@stdin >@stdout 2>@stderr
+        exit 0
+    } else {
+        error "prefix '$macportsPrefix' does not appear to have a working port-tclsh"
+    }
+}
+
+package require macports
+package require Pextlib 1.0
+umask 022
+mportinit ui_options
+
+if {$showVersion} {
+   puts "Version $MY_VERSION"
+   puts "MacPorts version [macports::version]"
+   exit 0
+}
+
+if {[llength $::argv] == 0} {
+   set filename "-"
+} else {
+    set filename [lindex $::argv 0]
+}
+set portList [read_portlist $filename]
+#ui_msg "portlist = $portList"
+
+set operationList [sort_ports $portList]
+
+install_ports $operationList
diff --git a/scene/scene.py b/scene/scene.py
index d1500e11..87dd45d5 100644
--- a/scene/scene.py
+++ b/scene/scene.py
@@ -499,7 +499,7 @@ class Scene(object):
 
         fps = int(1/self.frame_duration)
         height, width = self.camera.pixel_shape
-
+        
         command = [
             FFMPEG_BIN,
             '-y', # overwrite output file if it exists
diff --git a/topics/characters.py b/topics/characters.py
index fef18cb8..13957e02 100644
--- a/topics/characters.py
+++ b/topics/characters.py
@@ -30,7 +30,7 @@ class PiCreature(SVGMobject):
         "stroke_width" : 0,
         "stroke_color" : BLACK,
         "fill_opacity" : 1.0,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "height" : 3,
         "corner_scale_factor" : 0.75,
         "flip_at_start" : False,
diff --git a/topics/fractals.py b/topics/fractals.py
index 7a43ffab..e28f6fee 100644
--- a/topics/fractals.py
+++ b/topics/fractals.py
@@ -65,7 +65,7 @@ class SelfSimilarFractal(VMobject):
         "colors" : [RED, WHITE],
         "stroke_width" : 1,
         "fill_opacity" : 1,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
     }
     def init_colors(self):
         VMobject.init_colors(self)
@@ -293,7 +293,7 @@ class FractalCurve(VMobject):
             4 : 2,
             5 : 1,
         },
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
     }
 
     def generate_points(self):
diff --git a/topics/geometry.py b/topics/geometry.py
index 331aecab..2be06103 100644
--- a/topics/geometry.py
+++ b/topics/geometry.py
@@ -239,7 +239,7 @@ class Arrow(Line):
         "max_tip_length_to_length_ratio" : 0.35,
         "max_stem_width_to_tip_width_ratio" : 0.3,
         "buff" : MED_SMALL_BUFF,
-        "propogate_style_to_family" : False,
+        "propagate_style_to_family" : False,
         "preserve_tip_size_when_scaling" : True,
         "normal_vector" : OUT,
         "use_rectangular_stem" : True,
diff --git a/topics/number_line.py b/topics/number_line.py
index 59faac0d..ba9fc6e6 100644
--- a/topics/number_line.py
+++ b/topics/number_line.py
@@ -23,7 +23,7 @@ class NumberLine(VMobject):
         "line_to_number_vect" : DOWN,
         "line_to_number_buff" : MED_SMALL_BUFF,
         "include_tip" : False,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
     }
     def __init__(self, **kwargs):
         digest_config(self, kwargs)
@@ -135,7 +135,7 @@ class UnitInterval(NumberLine):
 
 class Axes(VGroup):
     CONFIG = {
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "three_d" : False,
         "number_line_config" : {
             "color" : LIGHT_GREY,
@@ -209,7 +209,7 @@ class NumberPlane(VMobject):
         "y_line_frequency" : 1,
         "secondary_line_ratio" : 1,
         "written_coordinate_height" : 0.2,
-        "propogate_style_to_family" : False,
+        "propagate_style_to_family" : False,
     }
     def generate_points(self):
         if self.x_radius is None:
diff --git a/topics/objects.py b/topics/objects.py
index 769ea8ff..bedc7b25 100644
--- a/topics/objects.py
+++ b/topics/objects.py
@@ -154,7 +154,7 @@ class PartyHat(SVGMobject):
         "pi_creature" : None,
         "stroke_width" : 0,
         "fill_opacity" : 1,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "frills_colors" : [MAROON_B, PURPLE],
         "cone_color" : GREEN,
         "dots_colors" : [YELLOW],
@@ -256,7 +256,7 @@ class PatreonLogo(SVGMobject):
         "fill_opacity" : 1,
         "stroke_width" : 0,
         "width" : 4,
-        "propogate_style_to_family" : True
+        "propagate_style_to_family" : True
     }
     def __init__(self, **kwargs):
         SVGMobject.__init__(self, **kwargs)
@@ -313,7 +313,7 @@ class Headphones(SVGMobject):
 
 class Clock(VGroup):
     CONFIG = {
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
     }
     def __init__(self, **kwargs):
         circle = Circle()
@@ -378,7 +378,7 @@ class Bubble(SVGMobject):
         "width"  : 8,
         "bubble_center_adjustment_factor" : 1./8,
         "file_name" : None,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "fill_color" : BLACK,
         "fill_opacity" : 0.8,
         "stroke_color" : WHITE,
diff --git a/topics/three_dimensions.py b/topics/three_dimensions.py
index ced06c21..5e1cc47c 100644
--- a/topics/three_dimensions.py
+++ b/topics/three_dimensions.py
@@ -204,7 +204,7 @@ class Cube(ThreeDMobject):
         "fill_opacity" : 0.75,
         "fill_color" : BLUE,
         "stroke_width" : 0,
-        "propogate_style_to_family" : True,
+        "propagate_style_to_family" : True,
         "side_length" : 2,
     }
     def generate_points(self):