"Tenet" is one of the few palindromes in English, and it means "creed", "purpose", "principle". Other similar palindromes are kayak, racecar, level, etc.  Having decided on the design feature of a changeable layout, I felt I had to find a palindrome to fulfill the role of this keyboard's name. A palindrome that could be read from left to right and right to left, just as the keyboard can be built both right-handed and left-handed.