Subject: mention what are nonprinting characters

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Sun, 17 Apr 2016 03:50:53 +0800

In (info "(coreutils) Concept index") there are several items that talk
about nonprinting characters.

Well on each definition be sure to have a blue word link:: to a passage
about which characters are nonprinting, lest the user think e.g.,
SPC (' ') is nonprinting.