- supposed to be BLOCKED). Note that the opposite event (power on all
- transmitters) is handled normally.
+ supposed to be BLOCKED).
+ * rfkill EPO will remain active until rfkill-input receives an
+ EV_SW SW_RFKILL_ALL 1 event. While the EPO is active, transmitters
+ are locked in the blocked state (rfkill will refuse to unblock them).
+ * rfkill-input implements different policies that the user can
+ select for handling EV_SW SW_RFKILL_ALL 1. It will unlock rfkill,
+ and either do nothing (leave transmitters blocked, but now unlocked),
+ restore the transmitters to their state before the EPO, or unblock
+ them all.