The debugger. Still the best debugger I have ever used.
You could grab the program counter/execution pointer and drag it literally anywhere, rewrite the code and keep on stepping.
I would get into a loop, realize I made a mistake, drag the PC back up above it, make a change and step back into the loop without breaking flow to compile or some other such nonsense.
Alien technology compared to most development environments even today.
You could grab the program counter/execution pointer and drag it literally anywhere, rewrite the code and keep on stepping.
I would get into a loop, realize I made a mistake, drag the PC back up above it, make a change and step back into the loop without breaking flow to compile or some other such nonsense.
Alien technology compared to most development environments even today.