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-rw-r--r--Help/command/project.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Help/command/project.rst b/Help/command/project.rst
index a726cbb..8a6bc1e 100644
--- a/Help/command/project.rst
+++ b/Help/command/project.rst
@@ -28,6 +28,11 @@ Also sets the variables:
:variable:`PROJECT_BINARY_DIR`, :variable:`<PROJECT-NAME>_BINARY_DIR`
Absolute path to the binary directory for the project.
+:variable:`PROJECT_IS_TOP_LEVEL`, :variable:`<PROJECT-NAME>_IS_TOP_LEVEL`
+ .. versionadded:: 3.21
+
+ Boolean value indicating whether the project is top-level.
+
Further variables are set by the optional arguments described in the following.
If any of these arguments is not used, then the corresponding variables are
set to the empty string.