+<!--
+ ****************************************************************************
+ * Copyright 2018-2020,2021 Thomas E. Dickey *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************
+ * @Id: curs_slk.3x,v 1.38 2021/06/17 21:26:02 tom Exp @
+-->
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML>
+<HEAD>
+<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+<meta name="generator" content="Manpage converted by man2html - see https://invisible-island.net/scripts/readme.html#others_scripts">
+<TITLE>curs_slk 3x</TITLE>
+<link rel="author" href="mailto:bug-ncurses@gnu.org">
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+</HEAD>
<BODY>
+<H1 class="no-header">curs_slk 3x</H1>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
+<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG> <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
-</PRE>
-<H2>NAME</H2><PRE>
- <B>slk_init</B>, <B>slk_set</B>, <B>slk_refresh</B>, <B>slk_noutrefresh</B>,
- <B>slk_label</B>, <B>slk_clear</B>, <B>slk_restore</B>, <B>slk_touch</B>, <B>slk_attron</B>,
- <B>slk_attrset</B>, <B>slk_attroff</B>, <B>slk_attr_on</B>, <B>slk_attr_set</B>,
- <B>slk_attr_off</B>, <B>slk_attr</B> <B>slk_color</B> - <B>curses</B> soft label rou-
- tines
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <B>#include</B> <B><curses.h></B>
-
- <B>int</B> <B>slk_init(int</B> <B>fmt);</B>
- <B>int</B> <B>slk_set(int</B> <B>labnum,</B> <B>const</B> <B>char</B> <B>*label,</B> <B>int</B> <B>fmt);</B>
- <B>int</B> <B>slk_refresh(void);</B>
- <B>int</B> <B>slk_noutrefresh(void);</B>
- <B>char</B> <B>*slk_label(int</B> <B>labnum);</B>
- <B>int</B> <B>slk_clear(void);</B>
- <B>int</B> <B>slk_restore(void);</B>
- <B>int</B> <B>slk_touch(void);</B>
- <B>int</B> <B>slk_attron(const</B> <B>chtype</B> <B>attrs);</B>
- <B>int</B> <B>slk_attroff(const</B> <B>chtype</B> <B>attrs);</B>
- <B>int</B> <B>slk_attrset(const</B> <B>chtype</B> <B>attrs);</B>
- <B>int</B> <B>slk_attr_on(attr_t</B> <B>attrs,</B> <B>void*</B> <B>opts);</B>
- <B>int</B> <B>slk_attr_off(const</B> <B>attr_t</B> <B>attrs,</B> <B>void</B> <B>*</B> <B>opts);</B>
- <B>int</B> <B>slk_attr_set(const</B> <B>attr_t</B> <B>attrs,</B>
- <B>short</B> <B>color_pair_number,</B> <B>void*</B> <B>opts);</B>
- <B>attr_t</B> <B>slk_attr(void);</B>
- <B>int</B> <B>slk_color(short</B> <B>color_pair_number);</B>
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>slk_init</STRONG>, <STRONG>slk_set</STRONG>, <STRONG>slk_wset</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_label</STRONG>,
+ <STRONG>slk_clear</STRONG>, <STRONG>slk_restore</STRONG>, <STRONG>slk_touch</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>,
+ <STRONG>slk_attroff</STRONG>, <STRONG>slk_attr_on</STRONG>, <STRONG>slk_attr_set</STRONG>, <STRONG>slk_attr_off</STRONG>, <STRONG>slk_attr</STRONG>,
+ <STRONG>slk_color</STRONG>, <STRONG>extended_slk_color</STRONG> - <STRONG>curses</STRONG> soft label routines
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The slk* functions manipulate the set of soft function-key
- labels that exist on many terminals. For those terminals
- that do not have soft labels, <B>curses</B> takes over the bottom
- line of <B>stdscr</B>, reducing the size of <B>stdscr</B> and the vari-
- able <B>LINES</B>. <B>curses</B> standardizes on eight labels of up to
- eight characters each. In addition to this, the ncurses
- implementation supports a mode where it simulates 12
- labels of up to five characters each. This is most common
- for todays PC like enduser devices. Please note that
- ncurses simulates this mode by taking over up to two lines
- at the bottom of the screen, it doesn't try to use any
- hardware support for this mode.
-
- The <B>slk_init</B> routine must be called before <B>initscr</B> or
- <B>newterm</B> is called. If <B>initscr</B> eventually uses a line from
- <B>stdscr</B> to emulate the soft labels, then <I>fmt</I> determines how
- the labels are arranged on the screen. Setting <I>fmt</I> to <B>0</B>
- indicates a 3-2-3 arrangement of the labels, <B>1</B> indicates a
- 4-4 arrangement and <B>2</B> indicates the PC like 4-4-4 mode. If
- <B>fmt</B> is set to <B>3</B>, it is again the PC like 4-4-4 mode, but
- in addition an index line is generated, helping the user
- to identify the key numbers easily.
-
- The <B>slk_set</B> routine requires <I>labnum</I> to be a label number,
- from <B>1</B> to <B>8</B> (resp. <B>12</B>); <I>label</I> must be the string to be put
- on the label, up to eight (resp. five) characters in
- length. A null string or a null pointer sets up a blank
- label. <I>fmt</I> is either <B>0</B>, <B>1</B>, or <B>2</B>, indicating whether the
- label is to be left-justified, centered, or right-justi-
- fied, respectively, within the label.
-
- The <B>slk_refresh</B> and <B>slk_noutrefresh</B> routines correspond to
- the <B>wrefresh</B> and <B>wnoutrefresh</B> routines.
-
- The <B>slk_label</B> routine returns the current label for label
- number <I>labnum</I>, with leading and trailing blanks stripped.
-
- The <B>slk_clear</B> routine clears the soft labels from the
- screen.
-
- The <B>slk_restore</B> routine, restores the soft labels to the
- screen after a <B>slk_clear</B> has been performed.
-
- The <B>slk_touch</B> routine forces all the soft labels to be
- output the next time a <B>slk_noutrefresh</B> is performed.
-
- The <B>slk_attron</B>, <B>slk_attrset</B>, <B>slk_attroff</B> and <B>slk_attr</B> rou-
- tines correspond to <B>attron</B>, <B>attrset</B>, <B>attroff</B> and <B>attr_get</B>.
- They have an effect only if soft labels are simulated on
- the bottom line of the screen. The default highlight for
- soft keys is A_STANDOUT (as in System V curses, which does
- not document this fact).
-
- The <B>slk_color</B> routine corresponds to <B>color_set</B>. It has an
- effect only if soft labels are simulated on the bottom
- line of the screen.
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- These routines return <B>ERR</B> upon failure and OK (SVr4 speci-
- fies only "an integer value other than <B>ERR</B>") upon success-
- ful completion. <B>slk_attr</B> returns the attribute used for
- the soft keys.
+ <STRONG>int</STRONG> <STRONG>slk_set(int</STRONG> <EM>labnum</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>label</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
+ /* extension */
+ <STRONG>int</STRONG> <STRONG>slk_wset(int</STRONG> <EM>labnum</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>wchar_t</STRONG> <STRONG>*</STRONG><EM>label</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
- <B>slk_label</B> returns <B>NULL</B> on error.
+ <STRONG>char</STRONG> <STRONG>*slk_label(int</STRONG> <EM>labnum</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_refresh(void);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_noutrefresh(void);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_clear(void);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_restore(void);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_touch(void);</STRONG>
-</PRE>
-<H2>NOTES</H2><PRE>
- Most applications would use <B>slk_noutrefresh</B> because a <B>wre-</B>
- <B>fresh</B> is likely to follow soon.
+ <STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attr_set(const</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>pair</EM><STRONG>,</STRONG> <STRONG>void*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
+ <STRONG>attr_t</STRONG> <STRONG>slk_attr(void);</STRONG>
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses standard, Issue 4, describes these func-
- tions. It changes the argument type of the attribute-
- manipulation functions <B>slk_attron</B>, <B>slk_attroff</B>,
- <B>slk_attrset</B> to be <B>attr_t</B>, and adds <B>const</B> qualifiers. The
- format codes <B>2</B> and <B>3</B> for <B>slk_init()</B> and the function
- <B>slk_attr</B> are specific to ncurses.
+ <STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <EM>pair</EM><STRONG>);</STRONG>
+ /* extension */
+ <STRONG>int</STRONG> <STRONG>extended_slk_color(int</STRONG> <EM>pair</EM><STRONG>);</STRONG>
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ The slk* functions manipulate the set of soft function-key labels that
+ exist on many terminals. For those terminals that do not have soft la-
+ bels, <STRONG>curses</STRONG> takes over the bottom line of <STRONG>stdscr</STRONG>, reducing the size of
+ <STRONG>stdscr</STRONG> and the variable <STRONG>LINES</STRONG>. <STRONG>curses</STRONG> standardizes on eight labels of
+ up to eight characters each. In addition to this, the ncurses imple-
+ mentation supports a mode where it simulates 12 labels of up to five
+ characters each. This is useful for PC-like enduser devices. ncurses
+ simulates this mode by taking over up to two lines at the bottom of the
+ screen; it does not try to use any hardware support for this mode.
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <B><A HREF="ncurses.3x.html">curses(3x)</A></B>, <B><A HREF="curs_attr.3x.html">curs_attr(3x)</A></B>, <B><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></B>,
- <B><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></B>
+</PRE><H3><a name="h3-Initialization">Initialization</a></H3><PRE>
+ The <STRONG>slk_init</STRONG> routine must be called before <STRONG>initscr</STRONG> or <STRONG>newterm</STRONG> is
+ called. If <STRONG>initscr</STRONG> eventually uses a line from <STRONG>stdscr</STRONG> to emulate the
+ soft labels, then <EM>fmt</EM> determines how the labels are arranged on the
+ screen:
+
+ <STRONG>0</STRONG> indicates a 3-2-3 arrangement of the labels.
+
+ <STRONG>1</STRONG> indicates a 4-4 arrangement
+
+ <STRONG>2</STRONG> indicates the PC-like 4-4-4 mode.
+
+ <STRONG>3</STRONG> is again the PC-like 4-4-4 mode, but in addition an index line is
+ generated, helping the user to identify the key numbers easily.
+</PRE><H3><a name="h3-Labels">Labels</a></H3><PRE>
+ The <STRONG>slk_set</STRONG> routine (and the <STRONG>slk_wset</STRONG> routine for the wide-character
+ library) has three parameters:
+ <EM>labnum</EM>
+ is the label number, from <STRONG>1</STRONG> to <STRONG>8</STRONG> (12 for <EM>fmt</EM> in <STRONG>slk_init</STRONG> is <STRONG>2</STRONG>
+ or <STRONG>3</STRONG>);
+ <EM>label</EM>
+ is be the string to put on the label, up to eight (five for <EM>fmt</EM>
+ in <STRONG>slk_init</STRONG> is <STRONG>2</STRONG> or <STRONG>3</STRONG>) characters in length. A null string or
+ a null pointer sets up a blank label.
+ <EM>fmt</EM> is either <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG>, indicating whether the label is to be
+ left-justified, centered, or right-justified, respectively,
+ within the label.
+ The <STRONG>slk_label</STRONG> routine returns the current label for label number <EM>lab-</EM>
+ <EM>num</EM>, with leading and trailing blanks stripped.
+</PRE><H3><a name="h3-Screen-updates">Screen updates</a></H3><PRE>
+ The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to the <STRONG>wrefresh</STRONG>
+ and <STRONG>wnoutrefresh</STRONG> routines.
+ The <STRONG>slk_clear</STRONG> routine clears the soft labels from the screen.
+ The <STRONG>slk_restore</STRONG> routine restores the soft labels to the screen after a
+ <STRONG>slk_clear</STRONG> has been performed.
+ The <STRONG>slk_touch</STRONG> routine forces all the soft labels to be output the next
+ time a <STRONG>slk_noutrefresh</STRONG> is performed.
+</PRE><H3><a name="h3-Video-attributes">Video attributes</a></H3><PRE>
+ The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> routines corre-
+ spond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>, respectively. They
+ have an effect only if soft labels are simulated on the bottom line of
+ the screen. The default highlight for soft keys is A_STANDOUT (as in
+ System V curses, which does not document this fact).
+</PRE><H3><a name="h3-Colors">Colors</a></H3><PRE>
+ The <STRONG>slk_color</STRONG> routine corresponds to <STRONG>color_set</STRONG>. It has an effect only
+ if soft labels are simulated on the bottom line of the screen.
+ Because <STRONG>slk_color</STRONG> accepts only <STRONG>short</STRONG> (signed 16-bit integer) values,
+ this implementation provides <STRONG>extended_slk_color</STRONG> which accepts an inte-
+ ger value, e.g., 32-bits.
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ These routines return <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> (SVr4 specifies only "an
+ integer value other than <STRONG>ERR</STRONG>") upon successful completion.
+ X/Open defines no error conditions. In this implementation
+ <STRONG>slk_attr</STRONG>
+ returns the attribute used for the soft keys.
+ <STRONG>slk_attroff</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_clear</STRONG>, <STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_refresh</STRONG>,
+ <STRONG>slk_touch</STRONG>
+ return an error if the terminal or the softkeys were not ini-
+ tialized.
+ <STRONG>slk_attrset</STRONG>
+ returns an error if the terminal or the softkeys were not ini-
+ tialized.
+ <STRONG>slk_attr_set</STRONG>
+ returns an error if the terminal or the softkeys were not ini-
+ tialized, or the color pair is outside the range 0..COL-
+ OR_PAIRS-1.
+ <STRONG>slk_color</STRONG>
+ returns an error if the terminal or the softkeys were not ini-
+ tialized, or the color pair is outside the range 0..COL-
+ OR_PAIRS-1.
+ <STRONG>slk_init</STRONG>
+ returns an error if the format parameter is outside the range
+ 0..3.
+ <STRONG>slk_label</STRONG>
+ returns <STRONG>NULL</STRONG> on error.
+ <STRONG>slk_set</STRONG>
+ returns an error if the terminal or the softkeys were not ini-
+ tialized, or the <EM>labnum</EM> parameter is outside the range of label
+ counts, or if the format parameter is outside the range 0..2,
+ or if memory for the labels cannot be allocated.
+</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
+ SVr3 introduced these functions:
+ slk_clear
+ slk_init
+ slk_label
+ slk_noutrefresh
+ slk_refresh
+ slk_restore
+ slk_set
+ slk_touch
+ SVr4 added these functions:
+ slk_attroff
+ slk_attron
+ slk_attrset
+ slk_start
+ X/Open Curses added these:
+ slk_attr_off
+ slk_attr_on
+ slk_attr_set
+ slk_color
+ slk_wset
+</PRE><H2><a name="h2-EXTENSIONS">EXTENSIONS</a></H2><PRE>
+ X/Open Curses documents the <EM>opts</EM> argument as reserved for future use,
+ saying that it must be null. This implementation uses that parameter
+ in ABI 6 for the functions which have a color-pair parameter to support
+ extended color pairs.
+ For functions which modify the color, e.g., <STRONG>slk_attr_set</STRONG>, if <EM>opts</EM> is
+ set it is treated as a pointer to <STRONG>int</STRONG>, and used to set the color
+ pair instead of the <STRONG>short</STRONG> pair parameter.
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
+ Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wrefresh</STRONG> is like-
+ ly to follow soon.
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ The XSI Curses standard, Issue 4, described the soft-key functions,
+ with some differences from SVr4 curses:
+ <STRONG>o</STRONG> It added functions like the SVr4 attribute-manipulation functions
+ <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attrset</STRONG>, but which use <STRONG>attr_t</STRONG> parame-
+ ters (rather than <STRONG>chtype</STRONG>), along with a reserved <EM>opts</EM> parameter.
+ Two of these new functions (unlike the SVr4 functions) have no pro-
+ vision for color: <STRONG>slk_attr_on</STRONG> and <STRONG>slk_attr_off</STRONG>.
+ The third function (<STRONG>slk_attr_set</STRONG>) has a color-pair parameter.
+ <STRONG>o</STRONG> It added <STRONG>const</STRONG> qualifiers to parameters (unnecessarily), and
+ <STRONG>o</STRONG> It added <STRONG>slk_color</STRONG>.
+ The format codes <STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init</STRONG> and the function <STRONG>slk_attr</STRONG> are
+ specific to ncurses.
+ X/Open Curses does not specify a limit for the number of colors and
+ color pairs which a terminal can support. However, in its use of <STRONG>short</STRONG>
+ for the parameters, it carries over SVr4's implementation detail for
+ the compiled terminfo database, which uses signed 16-bit numbers. This
+ implementation provides extended versions of those functions which use
+ <STRONG>short</STRONG> parameters, allowing applications to use larger color- and pair-
+ numbers.
+</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_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(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_slk.3x.html">curs_slk(3x)</A></STRONG>
</PRE>
-<HR>
-<ADDRESS>
-Man(1) output converted with
-<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
-</ADDRESS>
+<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>
+<ul>
+<li><a href="#h3-Initialization">Initialization</a></li>
+<li><a href="#h3-Labels">Labels</a></li>
+<li><a href="#h3-Screen-updates">Screen updates</a></li>
+<li><a href="#h3-Video-attributes">Video attributes</a></li>
+<li><a href="#h3-Colors">Colors</a></li>
+</ul>
+</li>
+<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
+<li><a href="#h2-HISTORY">HISTORY</a></li>
+<li><a href="#h2-EXTENSIONS">EXTENSIONS</a></li>
+<li><a href="#h2-NOTES">NOTES</a></li>
+<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
+<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
+</ul>
+</div>
</BODY>
</HTML>