algorithm - What does this definition of contiguous subsequences mean?

Question

I don't understand the following definition of a contiguous subsequence:

A contiguous subsequence of a list S is a subsequence made up of consecutive elements of S.

If S is {5, 15, -30, 10, -5, 40, 10}
then 15, -30, 10 is a contiguous subsequence.

What makes 15, -30, 10 a contiguous subsequence?

Answer 1

The form a subset that are next to each other within the set.

con·tig·u·ous/k?n?tigyo?o?s/Adjective
1. Sharing a common border; touching.
2. Next or together in sequence.