commit a2cf88c70a53949ab136f062baf32b28d57eaf72
Author: G. Branden Robinson <address@hidden>
Date:   Mon Sep 4 17:17:48 2017 -0400

    Add \(dq as glyph that doesn't print as itself.
    
    This is only true in a macro-call context, but mention this fact for the
    benefit of users confused by the issue.

diff --git a/man/groff_char.7.man b/man/groff_char.7.man
index b08e6d7d..b2ecc81a 100644
--- a/man/groff_char.7.man
+++ b/man/groff_char.7.man
@@ -273,6 +273,14 @@ The original character can be obtained with
 .
 .
 .TP
+.B \(dq
+the ISO \%latin1 \[oq]Quotation Mark\[cq] (code 34) prints as itself,
+but is also used to quote arguments to macros and will not appear in
+output in that context; the original character can be obtained in any
+context with \[oq]\f(CW\e(dq\fP\[cq].
+.
+.
+.TP
 .B -
 the ISO \%latin1 \[oq]Hyphen, Minus Sign\[cq] (code\ 45) prints as a
 hyphen (Unicode u2010).
@@ -303,7 +311,7 @@ l l l l l lx.
 Output	Input	Code	PostScript	Unicode	Notes
 _
 \[char33]	\[char33]	33	exclam	u0021	exclamation mark (bang)
-\[char34]	\[char34]	34	quotedbl	u0022	double quote
+\[char34]	\[char34] \fIor\fP \e(dq	34	quotedbl	u0022	double quote
 \[char35]	\[char35]	35	numbersign	u0023	number sign
 \[char36]	\[char36]	36	dollar	u0024	currency dollar sign
 \[char37]	\[char37]	37	percent	u0025	percent