diff --git a/USB-config-%26-command-protocol.md b/USB-config-%26-command-protocol.md
index e209324..881acc6 100644
--- a/USB-config-%26-command-protocol.md
+++ b/USB-config-%26-command-protocol.md
@@ -26,6 +26,12 @@ These commands work at any moment and are used to query the general device state
 * Set cur mode (`0x03`): sets the current mode. One extra request byte (the mode number), no response payload.
 * Get info string (`0x04`): get a null-terminated string containing human-readable info about the device. For display purposes only.
 
+### Persistent storage commands
+
+* Get storage info (`0x0c`): returns the 256-byte header data of the persistent storage. No arguments.
+* Get mode storage data (`0x0d`): returns the (variable-length) data of a mode. One argument byte, the mode.
+* Flush data to storage medium (`0x0e`): writes the storage data when changed. Automatically called on OS USB detach/unmount (as long as there is still power supplied to the device).
+
 ## Common mode commands
 
 These commands work for any mode, and have the same effect across all of them.