Hello,

As Mark suggested on IRC, here’s a patch that moves SRFI-9 under
“Compound Data Types”, plus a new section “Record Overview” that aims to
guide users through the maze of record APIs.

Initially, I wanted to add a “Records & Structures” section, and move
SRFI-9, Guile records, and Guile structures there, but since
@subsubsubsection doesn’t exist, I just kept them at the same level.

Comments?

Thanks,
Ludo’.