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- * @Id: curs_outopts.3x,v 1.25 2010/12/04 18:38:55 tom Exp @
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-<H1>curs_outopts 3x</H1>
-<HR>
+<H1 class="no-header">curs_outopts 3x</H1>
<PRE>
-<STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG> <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
+<STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
<STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
-</PRE>
-<H2><a name="h2-NAME">NAME</a></H2><PRE>
- <STRONG>clearok</STRONG>, <STRONG>idlok</STRONG>, <STRONG>idcok</STRONG>, <STRONG>immedok</STRONG>, <STRONG>leaveok</STRONG>, <STRONG>setscrreg</STRONG>,
- <STRONG>wsetscrreg</STRONG>, <STRONG>scrollok</STRONG>, <STRONG>nl</STRONG>, <STRONG>nonl</STRONG> - <STRONG>curses</STRONG> output options
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>clearok</STRONG>, <STRONG>idlok</STRONG>, <STRONG>idcok</STRONG>, <STRONG>immedok</STRONG>, <STRONG>leaveok</STRONG>, <STRONG>setscrreg</STRONG>, <STRONG>wsetscrreg</STRONG>,
+ <STRONG>scrollok</STRONG>, <STRONG>nl</STRONG>, <STRONG>nonl</STRONG> - <STRONG>curses</STRONG> output options
-</PRE>
-<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
- <STRONG>int</STRONG> <STRONG>clearok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>int</STRONG> <STRONG>idlok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>void</STRONG> <STRONG>idcok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>void</STRONG> <STRONG>immedok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>int</STRONG> <STRONG>leaveok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>int</STRONG> <STRONG>setscrreg(int</STRONG> <STRONG>top,</STRONG> <STRONG>int</STRONG> <STRONG>bot);</STRONG>
- <STRONG>int</STRONG> <STRONG>wsetscrreg(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>top,</STRONG> <STRONG>int</STRONG> <STRONG>bot);</STRONG>
- <STRONG>int</STRONG> <STRONG>scrollok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
+ <STRONG>int</STRONG> <STRONG>clearok(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>idlok(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>void</STRONG> <STRONG>idcok(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>void</STRONG> <STRONG>immedok(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>leaveok(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>setscrreg(int</STRONG> <EM>top</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>bot</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>wsetscrreg(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>top</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>bot</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>scrollok(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>bool</STRONG> <EM>bf</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>nl(void);</STRONG>
<STRONG>int</STRONG> <STRONG>nonl(void);</STRONG>
-</PRE>
-<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
- These routines set options that change the style of output
- within <STRONG>curses</STRONG>. All options are initially <STRONG>FALSE</STRONG>, unless
- otherwise stated. It is not necessary to turn these op-
- tions off before calling <STRONG>endwin</STRONG>.
-
- If <STRONG>clearok</STRONG> is called with <STRONG>TRUE</STRONG> as argument, the next call
- to <STRONG>wrefresh</STRONG> with this window will clear the screen com-
- pletely and redraw the entire screen from scratch. This
- is useful when the contents of the screen are uncertain,
- or in some cases for a more pleasing visual effect. If
- the <EM>win</EM> argument to <STRONG>clearok</STRONG> is the global variable <STRONG>curscr</STRONG>,
- the next call to <STRONG>wrefresh</STRONG> with any window causes the
- screen to be cleared and repainted from scratch.
-
- If <STRONG>idlok</STRONG> is called with <STRONG>TRUE</STRONG> as second argument, <STRONG>curses</STRONG>
- considers using the hardware insert/delete line feature of
- terminals so equipped. Calling <STRONG>idlok</STRONG> with <STRONG>FALSE</STRONG> as second
- argument disables use of line insertion and deletion.
- This option should be enabled only if the application
- needs insert/delete line, for example, for a screen edi-
- tor. It is disabled by default because insert/delete line
- tends to be visually annoying when used in applications
- where it is not really needed. If insert/delete line can-
- not be used, <STRONG>curses</STRONG> redraws the changed portions of all
- lines.
-
- If <STRONG>idcok</STRONG> is called with <STRONG>FALSE</STRONG> as second argument, <STRONG>curses</STRONG>
- no longer considers using the hardware insert/delete char-
- acter feature of terminals so equipped. Use of character
- insert/delete is enabled by default. Calling <STRONG>idcok</STRONG> with
- <STRONG>TRUE</STRONG> as second argument re-enables use of character inser-
- tion and deletion.
-
- If <STRONG>immedok</STRONG> is called with <STRONG>TRUE</STRONG> <STRONG>as</STRONG> <STRONG>argument</STRONG>, any change in
- the window image, such as the ones caused by <STRONG>waddch,</STRONG> <STRONG>wclr-</STRONG>
- <STRONG>tobot,</STRONG> <STRONG>wscrl</STRONG>, etc., automatically cause a call to <STRONG>wre-</STRONG>
- <STRONG>fresh</STRONG>. However, it may degrade performance considerably,
- due to repeated calls to <STRONG>wrefresh</STRONG>. It is disabled by de-
- fault.
-
- Normally, the hardware cursor is left at the location of
- the window cursor being refreshed. The <STRONG>leaveok</STRONG> option al-
- lows the cursor to be left wherever the update happens to
- leave it. It is useful for applications where the cursor
- is not used, since it reduces the need for cursor motions.
-
- The <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> routines allow the applica-
- tion programmer to set a software scrolling region in a
- window. The <EM>top</EM> and <EM>bot</EM> parameters are the line numbers
- of the top and bottom margin of the scrolling region.
- (Line 0 is the top line of the window.) If this option
- and <STRONG>scrollok</STRONG> are enabled, an attempt to move off the bot-
- tom margin line causes all lines in the scrolling region
- to scroll one line in the direction of the first line.
- Only the text of the window is scrolled. (Note that this
- has nothing to do with the use of a physical scrolling re-
- gion capability in the terminal, like that in the VT100.
- If <STRONG>idlok</STRONG> is enabled and the terminal has either a
- scrolling region or insert/delete line capability, they
- will probably be used by the output routines.)
-
- The <STRONG>scrollok</STRONG> option controls what happens when the cursor
- of a window is moved off the edge of the window or
- scrolling region, either as a result of a newline action
- on the bottom line, or typing the last character of the
- last line. If disabled, (<EM>bf</EM> is <STRONG>FALSE</STRONG>), the cursor is left
- on the bottom line. If enabled, (<EM>bf</EM> is <STRONG>TRUE</STRONG>), the window
- is scrolled up one line (Note that to get the physical
- scrolling effect on the terminal, it is also necessary to
- call <STRONG>idlok</STRONG>).
-
- The <STRONG>nl</STRONG> and <STRONG>nonl</STRONG> routines control whether the underlying
- display device translates the return key into newline on
- input, and whether it translates newline into return and
- line-feed on output (in either case, the call <STRONG>addch('\n')</STRONG>
- does the equivalent of return and line feed on the virtual
- screen). Initially, these translations do occur. If you
- disable them using <STRONG>nonl</STRONG>, <STRONG>curses</STRONG> will be able to make bet-
- ter use of the line-feed capability, resulting in faster
- cursor motion. Also, <STRONG>curses</STRONG> will then be able to detect
- the return key.
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ These routines set options that change the style of output within <STRONG>curs-</STRONG>
+ <STRONG>es</STRONG>. All options are initially <STRONG>FALSE</STRONG>, unless otherwise stated. It is
+ not necessary to turn these options off before calling <STRONG><A HREF="curs_initscr.3x.html">endwin(3x)</A></STRONG>.
+
+
+</PRE><H3><a name="h3-clearok">clearok</a></H3><PRE>
+ If <STRONG>clearok</STRONG> is called with <STRONG>TRUE</STRONG> as argument, the next call to <STRONG>wrefresh</STRONG>
+ with this window will clear the screen completely and redraw the entire
+ screen from scratch. This is useful when the contents of the screen
+ are uncertain, or in some cases for a more pleasing visual effect. If
+ the <EM>win</EM> argument to <STRONG>clearok</STRONG> is the global variable <STRONG>curscr</STRONG>, the next
+ call to <STRONG>wrefresh</STRONG> with any window causes the screen to be cleared and
+ repainted from scratch.
+
+
+</PRE><H3><a name="h3-idlok">idlok</a></H3><PRE>
+ If <STRONG>idlok</STRONG> is called with <STRONG>TRUE</STRONG> as second argument, <STRONG>curses</STRONG> considers using
+ the hardware insert/delete line feature of terminals so equipped.
+ Calling <STRONG>idlok</STRONG> with <STRONG>FALSE</STRONG> as second argument disables use of line inser-
+ tion and deletion. This option should be enabled only if the applica-
+ tion needs insert/delete line, for example, for a screen editor. It is
+ disabled by default because insert/delete line tends to be visually an-
+ noying when used in applications where it is not really needed. If in-
+ sert/delete line cannot be used, <STRONG>curses</STRONG> redraws the changed portions of
+ all lines.
+
+
+</PRE><H3><a name="h3-idcok">idcok</a></H3><PRE>
+ If <STRONG>idcok</STRONG> is called with <STRONG>FALSE</STRONG> as second argument, <STRONG>curses</STRONG> no longer con-
+ siders using the hardware insert/delete character feature of terminals
+ so equipped. Use of character insert/delete is enabled by default.
+ Calling <STRONG>idcok</STRONG> with <STRONG>TRUE</STRONG> as second argument re-enables use of character
+ insertion and deletion.
+
+
+</PRE><H3><a name="h3-immedok">immedok</a></H3><PRE>
+ If <STRONG>immedok</STRONG> is called with <STRONG>TRUE</STRONG> <STRONG>as</STRONG> <STRONG>argument</STRONG>, any change in the window
+ image, such as the ones caused by <STRONG>waddch,</STRONG> <STRONG>wclrtobot,</STRONG> <STRONG>wscrl</STRONG>, etc., auto-
+ matically cause a call to <STRONG>wrefresh</STRONG>. However, it may degrade perfor-
+ mance considerably, due to repeated calls to <STRONG>wrefresh</STRONG>. It is disabled
+ by default.
+
+
+</PRE><H3><a name="h3-leaveok">leaveok</a></H3><PRE>
+ Normally, the hardware cursor is left at the location of the window
+ cursor being refreshed. The <STRONG>leaveok</STRONG> option allows the cursor to be
+ left wherever the update happens to leave it. It is useful for appli-
+ cations where the cursor is not used, since it reduces the need for
+ cursor motions.
+
+
+</PRE><H3><a name="h3-setscrreg">setscrreg</a></H3><PRE>
+ The <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> routines allow the application programmer
+ to set a software scrolling region in a window. The <EM>top</EM> and <EM>bot</EM> param-
+ eters are the line numbers of the top and bottom margin of the
+ scrolling region. (Line 0 is the top line of the window.) If this op-
+ tion and <STRONG>scrollok</STRONG> are enabled, an attempt to move off the bottom margin
+ line causes all lines in the scrolling region to scroll one line in the
+ direction of the first line. Only the text of the window is scrolled.
+ (Note that this has nothing to do with the use of a physical scrolling
+ region capability in the terminal, like that in the VT100. If <STRONG>idlok</STRONG> is
+ enabled and the terminal has either a scrolling region or insert/delete
+ line capability, they will probably be used by the output routines.)
+
+
+</PRE><H3><a name="h3-scrollok">scrollok</a></H3><PRE>
+ The <STRONG>scrollok</STRONG> option controls what happens when the cursor of a window
+ is moved off the edge of the window or scrolling region, either as a
+ result of a newline action on the bottom line, or typing the last char-
+ acter of the last line. If disabled, (<EM>bf</EM> is <STRONG>FALSE</STRONG>), the cursor is left
+ on the bottom line. If enabled, (<EM>bf</EM> is <STRONG>TRUE</STRONG>), the window is scrolled
+ up one line (Note that to get the physical scrolling effect on the ter-
+ minal, it is also necessary to call <STRONG>idlok</STRONG>).
+
+
+</PRE><H3><a name="h3-nl_-nonl">nl, nonl</a></H3><PRE>
+ The <STRONG>nl</STRONG> and <STRONG>nonl</STRONG> routines control whether the underlying display device
+ translates the return key into newline on input, and whether it trans-
+ lates newline into return and line-feed on output (in either case, the
+ call <STRONG>addch('\n')</STRONG> does the equivalent of return and line feed on the
+ <EM>virtual</EM> <EM>screen</EM>). Initially, these translations do occur. If you dis-
+ able them using <STRONG>nonl</STRONG>, <STRONG>curses</STRONG> will be able to make better use of the
+ line-feed capability, resulting in faster cursor motion. Also, <STRONG>curses</STRONG>
+ will then be able to detect the return key.
+
+
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ The functions <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> return <STRONG>OK</STRONG> upon success and <STRONG>ERR</STRONG>
+ upon failure. All other routines that return an integer always return
+ <STRONG>OK</STRONG>.
+
+ X/Open Curses does not define any error conditions.
+
+ In this implementation, those functions that have a window pointer will
+ return an error if the window pointer is null.
+ <STRONG>wclrtoeol</STRONG>
+ returns an error if the cursor position is about to wrap.
-</PRE>
-<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- The functions <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> return <STRONG>OK</STRONG> upon suc-
- cess and <STRONG>ERR</STRONG> upon failure. All other routines that return
- an integer always return <STRONG>OK</STRONG>.
+ <STRONG>wsetscrreg</STRONG>
+ returns an error if the scrolling region limits extend out-
+ side the window.
- X/Open does not define any error conditions.
+ X/Open does not define any error conditions. This implementation re-
+ turns an error if the window pointer is null.
- In this implementation, those functions that have a window
- pointer will return an error if the window pointer is
- null.
- <STRONG>wclrtoeol</STRONG>
- returns an error if the cursor position is
- about to wrap.
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ These functions are described in the XSI Curses standard, Issue 4.
- <STRONG>wsetscrreg</STRONG>
- returns an error if the scrolling region lim-
- its extend outside the window.
+ The XSI Curses standard is ambiguous on the question of whether <STRONG>raw</STRONG>
+ should disable the CRLF translations controlled by <STRONG>nl</STRONG> and <STRONG>nonl</STRONG>. BSD
+ curses did turn off these translations; AT&T curses (at least as late
+ as SVr1) did not. We choose to do so, on the theory that a programmer
+ requesting raw input wants a clean (ideally 8-bit clean) connection
+ that the operating system will not alter.
- X/Open does not define any error conditions. This imple-
- mentation returns an error if the window pointer is null.
+ Some historic curses implementations had, as an undocumented feature,
+ the ability to do the equivalent of <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touch-</STRONG>
+ <STRONG>win(stdscr)</STRONG> or <STRONG>clear(stdscr)</STRONG>. This will not work under ncurses.
+ Earlier System V curses implementations specified that with <STRONG>scrollok</STRONG>
+ enabled, any window modification triggering a scroll also forced a
+ physical refresh. XSI Curses does not require this, and <STRONG>ncurses</STRONG> avoids
+ doing it to perform better vertical-motion optimization at <STRONG>wrefresh</STRONG>
+ time.
-</PRE>
-<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- These functions are described in the XSI Curses standard,
- Issue 4.
-
- The XSI Curses standard is ambiguous on the question of
- whether <STRONG>raw</STRONG>() should disable the CRLF translations con-
- trolled by <STRONG>nl</STRONG>() and <STRONG>nonl</STRONG>(). BSD curses did turn off these
- translations; AT&T curses (at least as late as SVr1) did
- not. We choose to do so, on the theory that a programmer
- requesting raw input wants a clean (ideally 8-bit clean)
- connection that the operating system will not alter.
-
- Some historic curses implementations had, as an undocu-
- mented feature, the ability to do the equivalent of
- <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touchwin(stdscr)</STRONG> or <STRONG>clear(std-</STRONG>
- <STRONG>scr)</STRONG>. This will not work under ncurses.
-
- Earlier System V curses implementations specified that
- with <STRONG>scrollok</STRONG> enabled, any window modification triggering
- a scroll also forced a physical refresh. XSI Curses does
- not require this, and <STRONG>ncurses</STRONG> avoids doing it to perform
- better vertical-motion optimization at <STRONG>wrefresh</STRONG> time.
-
- The XSI Curses standard does not mention that the cursor
- should be made invisible as a side-effect of <STRONG>leaveok</STRONG>.
- SVr4 curses documentation does this, but the code does
- not. Use <STRONG>curs_set</STRONG> to make the cursor invisible.
+ The XSI Curses standard does not mention that the cursor should be made
+ invisible as a side-effect of <STRONG>leaveok</STRONG>. SVr4 curses documentation does
+ this, but the code does not. Use <STRONG>curs_set</STRONG> to make the cursor invisi-
+ ble.
-</PRE>
-<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- Note that <STRONG>clearok</STRONG>, <STRONG>leaveok</STRONG>, <STRONG>scrollok</STRONG>, <STRONG>idcok</STRONG>, <STRONG>nl</STRONG>, <STRONG>nonl</STRONG> and
- <STRONG>setscrreg</STRONG> may be macros.
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
+ Note that <STRONG>clearok</STRONG>, <STRONG>leaveok</STRONG>, <STRONG>scrollok</STRONG>, <STRONG>idcok</STRONG>, <STRONG>nl</STRONG>, <STRONG>nonl</STRONG> and <STRONG>setscrreg</STRONG> may
+ be macros.
- The <STRONG>immedok</STRONG> routine is useful for windows that are used as
- terminal emulators.
+ The <STRONG>immedok</STRONG> routine is useful for windows that are used as terminal em-
+ ulators.
-</PRE>
-<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>,
- <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="curs_scroll.3x.html">curs_scroll(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>,
- <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
+</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_scroll.3x.html">curs_scroll(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
- <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
+
<STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
-<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
+<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
+<ul>
+<li><a href="#h3-clearok">clearok</a></li>
+<li><a href="#h3-idlok">idlok</a></li>
+<li><a href="#h3-idcok">idcok</a></li>
+<li><a href="#h3-immedok">immedok</a></li>
+<li><a href="#h3-leaveok">leaveok</a></li>
+<li><a href="#h3-setscrreg">setscrreg</a></li>
+<li><a href="#h3-scrollok">scrollok</a></li>
+<li><a href="#h3-nl_-nonl">nl, nonl</a></li>
+</ul>
+</li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-NOTES">NOTES</a></li>
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