The next command is like the continue statement in C; it starts the next iteration of the loop:           LINE: while (<STDIN>) {           next LINE if /^#/;    # discard comments           #...           }       Note that if there were a continue block on the above,it would get executed even on discarded lines. If the LABEL is omitted,the command refers to the innermost enclosing loop.       next cannot be used to exit a block which returns a value such as eval {},sub {} or do {},and should not be used to exit a grep() or map() operation.       Note that a block by itself is semantically identical to a loop that executes once. Thus next will exit such a block early.