**A video version of this tutorial is available at
+
+https://anl.box.com/v/StackingFaults-I**

In this exercise you will use GSAS-II to simulate the diffraction patterns from faulted diamond. Diamond most commonly has the @@ -1384,5 +1388,5 @@

You can explore the result of various stacking sequences in
the next block of commands; enter **1
-1 1 1 2 2 2** into the box and press **Enter**.
+1 1 1 2 2 2 into the box (remember to include spaces in between each number) and press **Enter**.
A plot showing the result of a single twin fault will be shown.

- +(Ive expanded the scale to show the +interesting stuff around each peak.) +

The blue line is a simulated observed pattern with imposed
Poisson noise, the red line is the calculated background and the green curve is
@@ -1572,5 +1579,5 @@
as layer 2 to layer 2 at each step in the simulation. We can force this by
selecting **Symmetric
-probabilities?** on the Layers page. Do this
+probabilities? on the Layers tab. Do this
and repeat the sequential simulation as above. Now the matrices are symmetric
as one could expect. When the simulation is finished, select the **Edit range** from the data window. Dont change
anything, just press **Ok**;
-this will clear the previous simulation. Then return to the clustered phase
+this will clear the previous simulation. Then return to the random
+faults phase
Layers tab. Do **Operations/Simulate
pattern** and press **Ok**