+# TMK Generic
+
+* I'm not sure what the Magic + H does.
+ Is this a menu that will pop up regardless of what platform and program is open?
+
+ Yes, this is sort of debugging.
+ Use PJRC's [hid_listen](https://www.pjrc.com/teensy/hid_listen.html) to see debug messages.
+
+# TMK/Ergodox specific
+
+* I would like to configure my leds to indicate the active layer.
+ I read that can be done, but I haven't seen an example for this firmware.
+ Can someone please post an example or a link?
+
+ TMK for Ergodox have support for seven (!) led's:
+ - three on right
+ - three on left (see http://geekhack.org/index.php?topic=22780.msg873819#msg873819 for more details)
+ - Teensy onboard led as well
+
+ Any of these leds can be used as layer indicator or NumLock/CapsLock/ScrollLock led.
+
+ [Here is example](https://github.com/cub-uanic/tmk_keyboard/blob/cub_layout/keyboard/ergodox/matrix.c#L121-167)
+ how you can assign some meaning to each led.
+ In this code only left leds are used to show layers, but you can
+ [change `led_set()`](https://github.com/cub-uanic/tmk_keyboard/blob/cub_layout/keyboard/ergodox/led.c)
+ and do anything you want with all leds.
+
+# Firmware