diff --git a/examples/bonnet_buttons.py b/examples/bonnet_buttons.py
index f5a07c7..539afd1 100644
--- a/examples/bonnet_buttons.py
+++ b/examples/bonnet_buttons.py
@@ -19,6 +19,10 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+# This example is for use on (Linux) computers that are using CPython with
+# Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+# not support PIL/pillow (python imaging library)!
+
 import board
 import busio
 from digitalio import DigitalInOut, Direction, Pull
diff --git a/examples/pillow_animate.py b/examples/pillow_animate.py
index fd2f039..70aa923 100644
--- a/examples/pillow_animate.py
+++ b/examples/pillow_animate.py
@@ -19,6 +19,10 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+# This example is for use on (Linux) computers that are using CPython with
+# Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+# not support PIL/pillow (python imaging library)!
+
 import math
 import time
 from board import SCL, SDA
diff --git a/examples/pillow_images.py b/examples/pillow_images.py
index f72cb80..4251593 100644
--- a/examples/pillow_images.py
+++ b/examples/pillow_images.py
@@ -19,6 +19,10 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+# This example is for use on (Linux) computers that are using CPython with
+# Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+# not support PIL/pillow (python imaging library)!
+
 from board import SCL, SDA
 import busio
 from PIL import Image
diff --git a/examples/pillow_shapes.py b/examples/pillow_shapes.py
index b3e5713..7ab2f17 100644
--- a/examples/pillow_shapes.py
+++ b/examples/pillow_shapes.py
@@ -19,6 +19,10 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+# This example is for use on (Linux) computers that are using CPython with
+# Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+# not support PIL/pillow (python imaging library)!
+
 from board import SCL, SDA
 import busio
 from PIL import Image, ImageDraw, ImageFont