Build a transition table, then step the machine along the tape
State: S0
Select a state's name to rename it. Choose one start state and tick any halt states. Hover over i to read a rule in words.
The blank symbol _ is always part of the alphabet. Add up to 16 other single-character symbols.
Removing a symbol deletes its rules and clears it from the tape. New symbols start with a rule that writes the same symbol, moves right and stays in the same state.
Are you sure? This deletes every state and transition rule and leaves a single start state, S0. The tape and alphabet are kept.