diff --git a/internal_filesystem/apps/com.example.camtest/res/mipmap-mdpi/icon_64x64.bin b/internal_filesystem/apps/com.example.camtest/res/mipmap-mdpi/icon_64x64.bin
new file mode 100644
index 00000000..ddf9eb8d
Binary files /dev/null and b/internal_filesystem/apps/com.example.camtest/res/mipmap-mdpi/icon_64x64.bin differ
diff --git a/internal_filesystem/apps/com.example.launcher/assets/launcher.py b/internal_filesystem/apps/com.example.launcher/assets/launcher.py
index e5d3b851..78d2c61d 100644
--- a/internal_filesystem/apps/com.example.launcher/assets/launcher.py
+++ b/internal_filesystem/apps/com.example.launcher/assets/launcher.py
@@ -7,7 +7,7 @@
 # All icons took: 1258ms
 # All icons took: 1457ms
 # All icons took: 1250ms
-
+# Most of this time is actually spent reading and parsing manifests.
 
 import uos
 
diff --git a/internal_filesystem/data/README.md b/internal_filesystem/data/README.md
new file mode 100644
index 00000000..2cfb1606
--- /dev/null
+++ b/internal_filesystem/data/README.md
@@ -0,0 +1,6 @@
+Apps can write their data (like settings) here, in a subfolder of their reversed fully qualified name, such as:
+
+/internal_filesystem/com.example.app1/settings.ini may contain:
+
+server = example.com
+port = 443
diff --git a/lib/README.md b/internal_filesystem/lib/README.md
similarity index 100%
rename from lib/README.md
rename to internal_filesystem/lib/README.md
diff --git a/lib/qmi8658.py b/internal_filesystem/lib/qmi8658.py
similarity index 100%
rename from lib/qmi8658.py
rename to internal_filesystem/lib/qmi8658.py
diff --git a/lib/traceback.mpy b/internal_filesystem/lib/traceback.mpy
similarity index 100%
rename from lib/traceback.mpy
rename to internal_filesystem/lib/traceback.mpy