Game Courier normally creates a program that includes the moves made by players as lines of code. Checking this will keep it from including the moves in the code, which will keep them from being played automatically. If you check it and do nothing else, you will be unable to move pieces. If you do use it, then you have to write code that will play the moves. This is useful if you want to allow multiple moves, because it allows you to handle one move at a time in a multi-move sequence.
Game Courier normally creates a program that includes the moves made by players as lines of code. Checking this will keep it from including the moves in the code, which will keep them from being played automatically. If you check it and do nothing else, you will be unable to move pieces. If you do use it, then you have to write code that will play the moves. This is useful if you want to allow multiple moves, because it allows you to handle one move at a time in a multi-move sequence.