+In really extreme cases, you might want Halibut to use \i{quotation
+marks} even in output formats which can change font. In
+\k{input-date}, for example, I mention the special formatting
+command \q{\cw{\\.}}. If that appeared at the end of a sentence
+\e{without} the quotes, then the two adjacent full stops would look
+pretty strange even if they were obviously in different fonts. So I
+used the \c{\\q} command to provide my own set of quotes, and then
+used \c{\\cw} rather than \c{\\c} to ensure that none of Halibut's
+output formats would add another set of quotes:
+
+\c the special formatting command \q{\cw{\\.}}.
+