Garrett's man page edits.

@@ -6,70 +6,68 @@
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-.TH BTOWC 3C "Jul 24, 2002"
+.TH BTOWC 3C "Jun 27, 2014"
 .SH NAME
 btowc, btowc_l \- single-byte to wide-character conversion
 .SH SYNOPSIS
 .LP
 .nf
 #include <stdio.h>
 #include <wchar.h>
 
 \fBwint_t\fR \fBbtowc\fR(\fBint\fR \fIc\fR);
-\fBwint_t\fR \fBbtowc_l\fR(\fBint\fR \fIc\fR, \fBlocale_t\fR \fIloc\fR);
 .fi
+.LP
+.nf
+#include <stdio.h>
+#include <wchar.h>
+#include <xlocale.h>
 
+\fBwint_t\fR \fBbtowc_l\fR(\fBint\fR \fIc\fR, \fBlocale_t\fR \fIloc\fR);
+.fi
 .SH DESCRIPTION
-.sp
 .LP
 The \fBbtowc()\fR and \fBbtowc_l\fR()functions determines whether
 \fIc\fR constitutes a valid (one-byte) character in the initial shift
 state.
-.sp
 .LP
-The behavior of \fBbtowc\fR is affected by the \fBLC_CTYPE\fR category of the
-current locale.  See \fBenviron\fR(5). The function \fBbtowc_l\fR does
-not use the current locale, and instead operates on the locale \fIloc\fR
-provided to the function, obtained through a call to
-\fBnewlocale\fR(3C).
+The behavior of \fBbtowc()\fR is affected by the \fBLC_CTYPE\fR category of the
+current locale.  See \fBenviron\fR(5). The function \fBbtowc_l()\fR does
+not use the current locale, and instead operates on the locale 
+specified by \fIloc\fR.
 .SH RETURN VALUES
-.sp
 .LP
 The \fBbtowc()\fR function returns \fBWEOF\fR if \fIc\fR has the value
 \fBEOF\fR or if  \fB(unsigned char)\fR\fIc\fR does not constitute a valid
 (one-byte) character in the initial shift state.  Otherwise, it returns the
 wide-character representation of that character.
 .SH ERRORS
-.sp
 .LP
 No errors are defined.
 .SH ATTRIBUTES
-.sp
 .LP
 See \fBattributes\fR(5) for descriptions of the following attributes:
-.sp
-
-.sp
 .TS
 box;
 c | c
 l | l .
 ATTRIBUTE TYPE  ATTRIBUTE VALUE
 _
-Interface Stability     Standard
+Interface Stability     See below.
 _
-MT-Level        MT-Safe with exceptions
+MT-Level        MT-Safe
 .TE
 
+.LP
+The
+.B btowc()
+function is Standard.  The
+.B btowc_l()
+function is Uncommitted.
 .SH SEE ALSO
 .sp
 .LP
 \fBnewlocale\fR(3C), \fBsetlocale\fR(3C), \fBuselocale\fR(3C), \fBwctob\fR(3C),
 \fBattributes\fR(5), \fBenviron\fR(5), \fBstandards\fR(5)
-.SH NOTES
-.sp
-.LP
-The \fBbtowc()\fR function can be used safely in multithreaded applications, as
-long as \fBsetlocale\fR(3C) is not being called to change the locale.