These two module descriptions don't really answer the questions
  "What do get by using this module?"
  "When should I use this module?"

==> xfreopen <==
Description:
a wrapper for freopen

==> xnanosleep <==
Description:
a more convenient interface to nanosleep


These patches provide a better description.


2021-06-15  Bruno Haible  <bruno@clisp.org>

	xnanosleep: Improve module description.
	* modules/xnanosleep (Description): Improve.
	* lib/xnanosleep.h: Add comment. Make includable from C++.
	* lib/xnanosleep.c: Update comment.

2021-06-15  Bruno Haible  <bruno@clisp.org>

	xfreopen: Improve module description.
	* modules/xfreopen (Description): Improve.
	* lib/xfreopen.h: Add comments. Make includable from C++.
	* lib/xfreopen.c: Update comment.