How does the records order of the server-side processing mode example is kept?

UdiD

I'm going through the DataTables documentation, and I'm now focusing on the server-side processing mode.
What I'm trying to understand is how does the order of the records retrieved from the server is kept?

Specifically, I'm talking about this example.
What I do see happening is, for example, when paging from page 1 to page 2, Ajax returns 10 entries that were retrieved from the database (starting with "Zenaida Frank", ending with "Gavin Joyce"), and are drawn.
What I don't see is any code controlling the order of the records that should be retrieved, so that when I go back to page 1, I'd see again the same 10 records that were there (starting with "Jackson Bradshaw", ending with "Ashton Cox").

What am I missing?

tangerine

Reading up on DataTables' "sent parameters" might help.
https://datatables.net/manual/server-side#Sent-parameters

I'm puzzled by your description of the example - I'm not seeing what you're seeing.
Page 1 shows "Airi Satou" to "Cedric Kelly". Page 2 shows "Charde Marshall" to "Gavin Cortez". That's without altering the page length or changing the default sort sequence.
Naturally, when paging back from 2 to 1, you'll see the same records that were there in the first place - assuming no interim re-sorting.

UdiD

Thank you @tangerine (regarding the ordering: I guess I did some sorting and that's why I saw different records)