👉 A sidelining is an element in a sequence, where each element after the first one is replaced by the next element. This operation is often used to create a new sequence from a given sequence or list of elements. For example: ```python list1 = [1, 2, 3] sidelined_list = list1[:] print(sidelined_list) ``` Output: ``` [2, 3, 4] ``` In this case, the original list