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diff --git a/docs/CommandLine.rst b/docs/CommandLine.rst
index 9b77a98908..6535551844 100644
--- a/docs/CommandLine.rst
+++ b/docs/CommandLine.rst
@@ -930,7 +930,8 @@ This section describes the basic attributes that you can specify on options.
.. _cl::desc(...):
* The **cl::desc** attribute specifies a description for the option to be
- shown in the ``-help`` output for the program.
+ shown in the ``-help`` output for the program. This attribute supports
+ multi-line descriptions with lines separated by '\n'.
.. _cl::value_desc: