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diff --git a/Master/texmf-dist/doc/latex/mandi/README b/Master/texmf-dist/doc/latex/mandi/README
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+The mandi package  provides commands  for typesetting symbols, expressions, and
+quantities used in introductory physics and astronomy. Many of the commands are
+inspired by  Matter & Interactions  by Ruth Chabay  and Bruce Sherwood. Many of
+the  astronomical commands  were inspired by my own classroom needs. It must be
+understood that mandi does  not do any  computations! It only provides commands
+for typesetting.
+
+Run  the  file  mandi.dtx  through (pdf)LaTeX  to  generate README (this file),
+mandi.ins, mandi.sty,  vdemo.py,  and  mandi.pdf (user documentation). I assume
+a TeXLive2011 or later distribution is installed.
diff --git a/Master/texmf-dist/doc/latex/mandi/README.txt b/Master/texmf-dist/doc/latex/mandi/README.txt
new file mode 100644
index 00000000000..eaa43321f25
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/mandi/README.txt
@@ -0,0 +1,10 @@
+The mandi package  provides commands  for typesetting symbols, expressions, and
+quantities used in introductory physics and astronomy. Many of the commands are
+inspired by  Matter & Interactions  by Ruth Chabay  and Bruce Sherwood. Many of
+the  astronomical commands  were inspired by my own classroom needs. It must be
+understood that mandi does  not do any  computations! It only provides commands
+for typesetting.
+
+Run  the  file  mandi.dtx  through (pdf)LaTeX  to  generate README (this file),
+mandi.ins, mandi.sty,  vdemo.py,  and  mandi.pdf (user documentation). I assume
+a TeXLive2011 or later distribution is installed.
diff --git a/Master/texmf-dist/doc/latex/mandi/mandi.pdf b/Master/texmf-dist/doc/latex/mandi/mandi.pdf
new file mode 100644
index 00000000000..07cbcbcb0fd
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/mandi/mandi.pdf
diff --git a/Master/texmf-dist/doc/latex/mandi/vdemo.py b/Master/texmf-dist/doc/latex/mandi/vdemo.py
new file mode 100644
index 00000000000..b50f0c35eea
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+++ b/Master/texmf-dist/doc/latex/mandi/vdemo.py
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+from __future__ import print_function, division
+from visual import *
+
+giant = sphere(pos=vector(-1e11,0,0),radius=2e10,mass=2e30,color=color.red)
+giant.p = vector(0, 0, -1e4) * giant.mass
+
+dwarf = sphere(pos=vector(1.5e11,0,0),radius=1e10,mass=1e30,color=color.yellow)
+dwarf.p = -giant.p
+
+for a in [giant, dwarf]:
+  a.orbit = curve(color=a.color, radius=2e9)
+
+dt = 86400
+while 1:
+  rate(100)
+  dist = dwarf.pos - giant.pos
+  force = 6.7e-11 * giant.mass * dwarf.mass * dist / mag(dist)**3
+  giant.p = giant.p + force*dt
+  dwarf.p = dwarf.p - force*dt
+  for a in [giant, dwarf]:
+    a.pos = a.pos + a.p/a.mass * dt
+    a.orbit.append(pos=a.pos)