Which mode allows a program to run line by line irrespective of the contents of individual lines?

Single Step Mode is designed to execute a program one line at a time, regardless of the content of those lines. This detailed and controlled approach allows a programmer or operator to monitor the execution of each line, making it invaluable for debugging and fine-tuning code.

In Single Step Mode, once a line is executed, the execution stops, granting the user the opportunity to assess the current state of the program and make any necessary adjustments before proceeding to the next line. This can help in identifying issues or improving the program's logic, as you can evaluate how each specific line contributes to the overall function of the program.

In contrast, other modes like Continuous Mode would execute the program without stopping for line-by-line inspection, making troubleshooting more challenging. Thus, Single Step Mode is particularly crucial for tasks that require meticulous attention to detail in program execution.