# HG changeset patch
# User Tess Snider <this@malkyne.org>
# Date 2015-11-20 08:37:46
# Node ID d903f8327a9c929c6e6795d4f9839f3beb440d90
# Parent  b5e80befcc7ac456046413021185f1e38a10b45d

README.md edited online with Bitbucket

diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -41,11 +41,24 @@ Add two ingredients to your paint bench.
 
 Occasionally, you will see a warning dialog that informs you that a "Reaction clipped."  That means that one or more of the color components moved outside of the testable range.  This makes it impossible to calculate the reaction from these two ingredients.
 
-You can solve this by doing a three-way test.  To do this, select a third ingredient that has known reaction values with the two ingredients you are attempting to pair, and which will adjust the color component that was clipping, so that it is no longer doing so.  Use this additional ingredient as the first ingredient in the new test and combine that with your two ingredients that clipped.  In Desert Paint Lab, you'll want to select a known pairing in the first two boxes, and the other ingredient in the third.  Desert Paint Lab can then do all the math to figure out the mystery reaction.
+You can solve this by doing a three-way test.
+
+1. In your clipped reaction, let's call your **1st** ingredient **A** and your **2nd** ingredient **B**.
+1. Select a **non-catalyst** ingredient **C** for which you have already tested **C + A** and **C + B**.  It is OK if there was a reaction in those earlier tests.  Desert Paint Lab can work out the math.
+1. In Desert Paint Lab, select ingredients as follows:
+    1. **C**
+    2. **A**
+    3. **B**
+1. Capture.
+1. Record.
+
+For clipped reactions, your **C** ingredient should be one that corrects for the clipped color.  For example, if your reaction clipped low on blue, consider using Copper or Earth Light for your **C** ingredient, because those are very blue.  On the other hand, if your reaction clipped high on red, consider using Toad Skin as your **C** ingredient, because it is very low on red.
 
 In many cases, it may be easiest to go back and do these three-way tests after you have finished all of your other testing.
 
-Example: Toad Skin and Saltpeter clipped with red too low. You have already tested Red Sand (high red) and Toad Skin, which don't react and Red Sand and Saltpeter, which have a reaction that doesn't reduce red. In that case, try a reaction using Red Sand, Toad Skin, and Saltpeter.
+### Catalysts
+
+For catalyst to catalyst reaction tests, follow the three-way instructions, as above.
 
 ### Finishing Up