When should markers be used in Karel programming?

Using markers in Karel programming serves the purpose of establishing visual reference points in the environment. This can significantly aid Karel in navigating and understanding its surroundings. Markers provide a way to track locations, indicate where Karel has been, or where it needs to go next. By placing markers, you create a clear system that helps Karel make decisions based on the layout of the environment, which can be particularly useful in more complex scenarios where spatial awareness is crucial.

Markers can be placed at strategic locations to signify important spots Karel should remember, such as starting points, checkpoints, or destination points. This enhances Karel’s ability to complete tasks efficiently by allowing it to utilize these reference points when planning its actions or movements throughout the programming logic.