Add comment to confusing commands.
Add comment to confusing commands.

Change-Id: I7b84b9d8e9b3b595e0bab33d5e219842f6c86f83

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base