Sweep2Wake
Sweep2wake allows you to wake up your device by swiping your finger across the capacitive buttons from left to right. Swiping from right to left will put it back to sleep (sweep2sleep). There are now options for sweep2wake/sweep2sleep, sweep2sleep only, and disabled. If you use ViperXL, make sure to enable sweep2wake in Venom Tweaks. Note that in Venom Tweaks, the sweep2sleep only option can be selected by choosing Enable (no buttons backlight).
DoubleTap2Wake
DoubleTap2Wake (DT2W) allows you to wake the device by double tapping the capacitive buttons.
/sys/android_key/doubletap2wake
0=disabled
1=enable doubletap2wake using back button
2=enable doubletap2wake using home button
3=enable doubletap2wake using recent apps button
Button Light Notification
With Button Light Notification (BLN), the capacitive buttons will blink on and off when you have a new notification. You can edit /etc/elementalx.conf to change the setting on boot.
/sys/class/leds/button-backlight/bln
0 = disabled
1 = BLN enabled