Address review comments

Clarify whitespace character determination in constructor

Author: cpplearner

source/iostreams.tex

@@ -4585,23 +4585,13 @@
 \tcode{setstate(failbit | eofbit)}
 (which may throw
 \tcode{ios_base::failure}).
-After any preparation is completed, \exposid{ok_} is set to the value of \tcode{is.good()}.
 
 \pnum
-\remarks
-This constructor
-uses the currently imbued locale in \tcode{is},
-to determine whether the next input character is
-whitespace or not.
-
-\pnum
-To decide if the character \tcode{c} is a whitespace character,
-the constructor performs as if it executes the following code fragment:
-\begin{codeblock}
-const ctype<charT>& ct = use_facet<ctype<charT>>(is.getloc());
-if (ct.is(ct.space, c))
-  // \tcode{c} is a whitespace character.
-\end{codeblock}
+The currently imbued locale in \tcode{is} is used
+to determine whether or not the next input character is whitespace.
+The character \tcode{c} is a whitespace character if
+\tcode{ct.is(ct.space, c)} is \tcode{true},
+where \tcode{ct} is \tcode{use_facet<ctype<charT>>(is.getloc())}.
 
 \pnum
 During preparation, the constructor may call
@@ -4616,6 +4606,9 @@
 \indextext{implementation-dependent}%
 implementation-dependent operations.
 \end{footnote}
+
+\pnum
+After any preparation is completed, \exposid{ok_} is set to the value of \tcode{is.good()}.
 \end{itemdescr}
 
 \indexlibrarydtor{sentry}%