diff --git a/mlir/examples/toy/Ch1/CMakeLists.txt b/mlir/examples/toy/Ch1/CMakeLists.txt
--- a/mlir/examples/toy/Ch1/CMakeLists.txt
+++ b/mlir/examples/toy/Ch1/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 set(LLVM_LINK_COMPONENTS
   Support
   )
diff --git a/mlir/examples/toy/Ch2/CMakeLists.txt b/mlir/examples/toy/Ch2/CMakeLists.txt
--- a/mlir/examples/toy/Ch2/CMakeLists.txt
+++ b/mlir/examples/toy/Ch2/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 add_subdirectory(include)
 
 set(LLVM_LINK_COMPONENTS
diff --git a/mlir/examples/toy/Ch3/CMakeLists.txt b/mlir/examples/toy/Ch3/CMakeLists.txt
--- a/mlir/examples/toy/Ch3/CMakeLists.txt
+++ b/mlir/examples/toy/Ch3/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 include_directories(include)
 add_subdirectory(include)
 
diff --git a/mlir/examples/toy/Ch4/CMakeLists.txt b/mlir/examples/toy/Ch4/CMakeLists.txt
--- a/mlir/examples/toy/Ch4/CMakeLists.txt
+++ b/mlir/examples/toy/Ch4/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 include_directories(include)
 add_subdirectory(include)
 
diff --git a/mlir/examples/toy/Ch4/include/toy/CMakeLists.txt b/mlir/examples/toy/Ch4/include/toy/CMakeLists.txt
--- a/mlir/examples/toy/Ch4/include/toy/CMakeLists.txt
+++ b/mlir/examples/toy/Ch4/include/toy/CMakeLists.txt
@@ -1,8 +1,10 @@
+# Most dialects should use add_mlir_dialect().  See examples/standalone.
 set(LLVM_TARGET_DEFINITIONS Ops.td)
 mlir_tablegen(Ops.h.inc -gen-op-decls)
 mlir_tablegen(Ops.cpp.inc -gen-op-defs)
 add_public_tablegen_target(ToyCh4OpsIncGen)
 
+# Most dialects should use add_mlir_interfaces().
 set(LLVM_TARGET_DEFINITIONS ShapeInferenceInterface.td)
 mlir_tablegen(ShapeInferenceOpInterfaces.h.inc -gen-op-interface-decls)
 mlir_tablegen(ShapeInferenceOpInterfaces.cpp.inc -gen-op-interface-defs)
diff --git a/mlir/examples/toy/Ch5/CMakeLists.txt b/mlir/examples/toy/Ch5/CMakeLists.txt
--- a/mlir/examples/toy/Ch5/CMakeLists.txt
+++ b/mlir/examples/toy/Ch5/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 include_directories(include)
 add_subdirectory(include)
 
diff --git a/mlir/examples/toy/Ch5/include/toy/CMakeLists.txt b/mlir/examples/toy/Ch5/include/toy/CMakeLists.txt
--- a/mlir/examples/toy/Ch5/include/toy/CMakeLists.txt
+++ b/mlir/examples/toy/Ch5/include/toy/CMakeLists.txt
@@ -1,8 +1,10 @@
+# Most dialects should use add_mlir_dialect().  See examples/standalone.
 set(LLVM_TARGET_DEFINITIONS Ops.td)
 mlir_tablegen(Ops.h.inc -gen-op-decls)
 mlir_tablegen(Ops.cpp.inc -gen-op-defs)
 add_public_tablegen_target(ToyCh5OpsIncGen)
 
+# Most dialects should use add_mlir_interfaces().
 set(LLVM_TARGET_DEFINITIONS ShapeInferenceInterface.td)
 mlir_tablegen(ShapeInferenceOpInterfaces.h.inc -gen-op-interface-decls)
 mlir_tablegen(ShapeInferenceOpInterfaces.cpp.inc -gen-op-interface-defs)
diff --git a/mlir/examples/toy/Ch6/CMakeLists.txt b/mlir/examples/toy/Ch6/CMakeLists.txt
--- a/mlir/examples/toy/Ch6/CMakeLists.txt
+++ b/mlir/examples/toy/Ch6/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 include_directories(include)
 add_subdirectory(include)
 
diff --git a/mlir/examples/toy/Ch6/include/toy/CMakeLists.txt b/mlir/examples/toy/Ch6/include/toy/CMakeLists.txt
--- a/mlir/examples/toy/Ch6/include/toy/CMakeLists.txt
+++ b/mlir/examples/toy/Ch6/include/toy/CMakeLists.txt
@@ -1,8 +1,10 @@
+# Most dialects should use add_mlir_dialect().  See examples/standalone.
 set(LLVM_TARGET_DEFINITIONS Ops.td)
 mlir_tablegen(Ops.h.inc -gen-op-decls)
 mlir_tablegen(Ops.cpp.inc -gen-op-defs)
 add_public_tablegen_target(ToyCh6OpsIncGen)
 
+# Most dialects should use add_mlir_interfaces().
 set(LLVM_TARGET_DEFINITIONS ShapeInferenceInterface.td)
 mlir_tablegen(ShapeInferenceOpInterfaces.h.inc -gen-op-interface-decls)
 mlir_tablegen(ShapeInferenceOpInterfaces.cpp.inc -gen-op-interface-defs)
diff --git a/mlir/examples/toy/Ch7/CMakeLists.txt b/mlir/examples/toy/Ch7/CMakeLists.txt
--- a/mlir/examples/toy/Ch7/CMakeLists.txt
+++ b/mlir/examples/toy/Ch7/CMakeLists.txt
@@ -1,3 +1,4 @@
+# For a better template to copy, see examples/standalone
 include_directories(include)
 add_subdirectory(include)
 
diff --git a/mlir/examples/toy/Ch7/include/toy/CMakeLists.txt b/mlir/examples/toy/Ch7/include/toy/CMakeLists.txt
--- a/mlir/examples/toy/Ch7/include/toy/CMakeLists.txt
+++ b/mlir/examples/toy/Ch7/include/toy/CMakeLists.txt
@@ -1,8 +1,10 @@
+# Most dialects should use add_mlir_dialect().  See examples/standalone.
 set(LLVM_TARGET_DEFINITIONS Ops.td)
 mlir_tablegen(Ops.h.inc -gen-op-decls)
 mlir_tablegen(Ops.cpp.inc -gen-op-defs)
 add_public_tablegen_target(ToyCh7OpsIncGen)
 
+# Most dialects should use add_mlir_interfaces().
 set(LLVM_TARGET_DEFINITIONS ShapeInferenceInterface.td)
 mlir_tablegen(ShapeInferenceOpInterfaces.h.inc -gen-op-interface-decls)
 mlir_tablegen(ShapeInferenceOpInterfaces.cpp.inc -gen-op-interface-defs)