If you have a warlock with Devil's Sight, open the character screen, open the drop-down for the ability, and hover. I got:
ERROR: No Progression Description
ID:
00000000-0000-0000-0000-000000000000
Table:
00000000-0000-0000-0000-000000000000
Entry:
DarkvisionRangeMin(18)
Type:
DarkvisionRangeMin
Level: -1
Passive:
DevilsSight
