Merge "Adding doc reference of ZUUL_CHANGES"
diff --git a/doc/source/launchers.rst b/doc/source/launchers.rst
index c799291..b95354f 100644
--- a/doc/source/launchers.rst
+++ b/doc/source/launchers.rst
@@ -78,6 +78,10 @@
The target branch for the change that triggered this build.
**ZUUL_CHANGE**
The Gerrit change ID for the change that triggered this build.
+**ZUUL_CHANGES**
+ A caret character separated list of the changes upon which this build
+ is dependent upon in the form of a colon character separated list
+ consisting of project name, target branch, and revision ref.
**ZUUL_CHANGE_IDS**
All of the Gerrit change IDs that are included in this build (useful
when the DependentPipelineManager combines changes for testing).