http://valinet6l6tq6d5yohaa6gdsf2ho4qcqcxyj2nahp5kd4z7nsa6ycdqd.onion/2015/09/22/ThinkPad-W540-review.html
The Fn and Ctrl keys can be swapped using a setting in BIOS, which I did, as many people, like me, are accustomed to having the Ctrl key to the far left, while on Lenovo keyboards, Fn is on the far left, with Ctrl right to it. Thankfully, this can all be fixed. Fn lock unfortunately keeps a green light on, on the Fn key, at all times.