What is the purpose of the 'createStep' function in the Staircase program?

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The 'createStep' function in the Staircase program is designed to generate a step in the staircase. This function typically contains instructions that allow Karel to perform the necessary actions to construct a step, such as placing a ball (representing a step) and moving to the correct position for the next step. By encapsulating these actions within a function, the program becomes more organized and easier to read or modify. This method also allows for the reuse of the step creation logic, which is crucial for efficiently building the staircase. The clarity and reusability of the 'createStep' function are key components in programming, promoting better practices and simplifying complex tasks.