Span

represents a span of elements i through j.

i;;
represents a span from i to the end.

;;j
represents a span from the beginning to j.

represents a span that includes all elements.

represents a span from i through j in steps of k.

represents a span from i to the end in steps of k.

represents a span from the beginning to j in steps of k.

;;;;k
represents a span from the beginning to the end in steps of k.