What did the marks ''x'' ''e'' and ''sc'' mean in Ellis island?

At Ellis Island, the marks "x," "e," and "sc" were used by inspectors to denote specific observations about immigrants. An "x" indicated that the individual needed further examination, "e" signified that the person was eligible for entry, and "sc" marked someone who had a suspected mental or physical condition. These notations helped streamline the inspection process and determine the fate of incoming immigrants.