What Turing called "the state formula" includes both the current instruction and all the symbols on the tape:

That is, I doubt they will address any of the other problem areas under their current instructions.

A short jump uses an 8-bit signed operand, which is a relative offset from the current instruction.

The Instruction register stores the current instruction to be executed.

A state register that stores/identifies the current instruction to be executed.

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These events are too often used as nuggets quarried from the record and displayed for our current instruction.

The fifth register, PC, points at the current instruction in the code area.

So remember we have the program counter, which is a register that points to the current instruction that we're executing.

Performance is increased by prefetching the next instruction during the execution of the current instruction.