diff --git a/src/External/CMakeLists.txt b/src/External/CMakeLists.txt
index 8b1378917..4917e752c 100644
--- a/src/External/CMakeLists.txt
+++ b/src/External/CMakeLists.txt
@@ -1 +1,2 @@
-
+# No examples in this category yet; this file exists because
+# src/CMakeLists.txt calls add_subdirectory(External).
diff --git a/src/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion/CMakeLists.txt b/src/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion/CMakeLists.txt
index 62596ffa7..cb6bb5ba2 100644
--- a/src/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion/CMakeLists.txt
+++ b/src/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion/CMakeLists.txt
@@ -2,7 +2,12 @@ cmake_minimum_required(VERSION 3.22.1)
 
 set(input_image ${CMAKE_CURRENT_BINARY_DIR}/BrainProtonDensitySlice.png)
 set(output_image Output.png)
-set(test_options 5 0.125 3.0)
+set(
+  test_options
+  5
+  0.125
+  3.0
+)
 
 project(ComputeCurvatureAnisotropicDiffusion)
 
@@ -10,37 +15,45 @@ find_package(ITK REQUIRED)
 itk_generate_factory_registration()
 
 add_executable(${PROJECT_NAME} Code.cxx)
-target_link_libraries(${PROJECT_NAME}
+target_link_libraries(
+  ${PROJECT_NAME}
   PRIVATE
     ITK::ITKImageIO
     ITK::ITKAnisotropicSmoothingModule
     ITK::ITKImageIntensityModule
 )
 
-install(TARGETS ${PROJECT_NAME}
+install(
+  TARGETS
+    ${PROJECT_NAME}
   DESTINATION bin/ITKSphinxExamples/Filtering/AnisotropicSmoothing
   COMPONENT Runtime
-  )
+)
 
-install(FILES Code.cxx CMakeLists.txt Code.py
-  DESTINATION share/ITKSphinxExamples/Code/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion
+install(
+  FILES
+    Code.cxx
+    CMakeLists.txt
+    Code.py
+  DESTINATION
+    share/ITKSphinxExamples/Code/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion
   COMPONENT Code
 )
 
 enable_testing()
-add_test(NAME ComputeCurvatureAnisotropicDiffusionTest
-  COMMAND ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${PROJECT_NAME}
-  ${input_image}
-  ${output_image}
-  ${test_options}
+add_test(
+  NAME ComputeCurvatureAnisotropicDiffusionTest
+  COMMAND
+    ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${PROJECT_NAME} ${input_image}
+    ${output_image} ${test_options}
 )
 
 if(ITK_WRAP_PYTHON)
   string(REPLACE . "Python." output_image "${output_image}")
-  add_test(NAME ComputeCurvatureAnisotropicDiffusionTestPython
-    COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/Code.py
-      ${input_image}
-      ${output_image}
-      ${test_options}
-    )
+  add_test(
+    NAME ComputeCurvatureAnisotropicDiffusionTestPython
+    COMMAND
+      ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/Code.py ${input_image}
+      ${output_image} ${test_options}
+  )
 endif()
diff --git a/src/GPU/CMakeLists.txt b/src/GPU/CMakeLists.txt
index 8b1378917..23f313c2a 100644
--- a/src/GPU/CMakeLists.txt
+++ b/src/GPU/CMakeLists.txt
@@ -1 +1,2 @@
-
+# No examples in this category yet; this file exists because
+# src/CMakeLists.txt calls add_subdirectory(GPU).