Cork

Cork is a programming language written by User:Imaginer1 drawing inspiration from Brainfuck and the Wang B-machine. Example programs include the adder  and the multiplier

Characters
Commands are numbered 0, 1, 2... etc. For example, the program ,!0>+< has its commands numbered as  being the zeroth command,   being the first command,   being the second command, and so on. The  indicates a jump to the zeroth command, the initial one in the program. Furthermore, the final  in the program ,>,<->>+<<!4>->+<!12> does not indicate a jump to command 1, but a jump to command 12.

External resources

 * Christian Manahl's original Python interpreter