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-rw-r--r--Help/manual/cmake-language.7.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Help/manual/cmake-language.7.rst b/Help/manual/cmake-language.7.rst
index 7285897..61d0a42 100644
--- a/Help/manual/cmake-language.7.rst
+++ b/Help/manual/cmake-language.7.rst
@@ -312,6 +312,9 @@ inside out, e.g. ``${outer_${inner_variable}_variable}``.
The `Variables`_ section documents the scope of variable names
and how their values are set.
+An *environment variable reference* has the form ``$ENV{VAR}`` and
+is evaluated in the same contexts as a normal variable reference.
+
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