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-rw-r--r--docs/CommandGuide/lit.rst4
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diff --git a/docs/CommandGuide/lit.rst b/docs/CommandGuide/lit.rst
index 2f6d9a1..a4681fb 100644
--- a/docs/CommandGuide/lit.rst
+++ b/docs/CommandGuide/lit.rst
@@ -316,6 +316,10 @@ executed, two important global variables are predefined:
*on_clone* function will generally modify), and (3) the test path to the new
directory being scanned.
+ **pipefail** Normally a test using a shell pipe fails if any of the commands
+ on the pipe fail. If this is not desired, setting this variable to false
+ makes the test fail only if the last command in the pipe fails.
+
TEST DISCOVERY
~~~~~~~~~~~~~~