makeinfo-region
makeinfo-region is an interactive autoloaded compiled Lisp function in `makeinfo.el
'.
(makeinfo-region REGION-BEGINNING REGION-END)
Make Info file from region of current Texinfo file, and switch to it.
This command does not offer the `next-error' feature since it would
apply to a temporary file, not the original; use the `makeinfo-buffer'
command to gain use of `next-error'.