ncurses 6.1 - patch 20190713
[ncurses.git] / doc / html / man / curs_slk.3x.html
index 76adbbb32838d2d37ce9fae4eaa1a39aec230356..4fc3d596a65e39bc2a7ca28d5f623809191ffd43 100644 (file)
@@ -1,6 +1,6 @@
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-  * @Id: curs_slk.3x,v 1.22 2010/12/04 18:38:55 tom Exp @
+  * @Id: curs_slk.3x,v 1.34 2018/07/28 22:20:54 tom Exp @
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-<H1>curs_slk 3x</H1>
-<HR>
+<H1 class="no-header">curs_slk 3x</H1>
 <PRE>
-<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>                                               <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
+<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><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>curses</STRONG> soft label
-       routines
+</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><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
 
-       <STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <STRONG>fmt);</STRONG>
-       <STRONG>int</STRONG> <STRONG>slk_set(int</STRONG> <STRONG>labnum,</STRONG> <STRONG>const</STRONG> <STRONG>char</STRONG> <STRONG>*label,</STRONG> <STRONG>int</STRONG> <STRONG>fmt);</STRONG>
+       <STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
+
+       <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>
+       <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>
+
+       <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>char</STRONG> <STRONG>*slk_label(int</STRONG> <STRONG>labnum);</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>
-       <STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
-       <STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
-       <STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
-       <STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
-       <STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <STRONG>opts);</STRONG>
-       <STRONG>int</STRONG>  <STRONG>slk_attr_set(const</STRONG>  <STRONG>attr_t</STRONG>  <STRONG>attrs,</STRONG>  <STRONG>short</STRONG> <STRONG>color_pair,</STRONG>
-       <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
+
+       <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>
-       <STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <STRONG>color_pair);</STRONG>
-       <STRONG>int</STRONG> <STRONG>slk_wset(int</STRONG> <STRONG>labnum,</STRONG> <STRONG>const</STRONG> <STRONG>wchar_t</STRONG> <STRONG>*label,</STRONG> <STRONG>int</STRONG> <STRONG>fmt);</STRONG>
 
+       <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 labels, <STRONG>curses</STRONG> takes over the bottom
-       line  of <STRONG>stdscr</STRONG>, reducing the size of <STRONG>stdscr</STRONG> and the vari-
-       able <STRONG>LINES</STRONG>.  <STRONG>curses</STRONG> standardizes on eight labels of up  to
-       eight  characters  each.  In addition to this, the ncurses
-       implementation supports a mode where it simulates  12  la-
-       bels  of  up  to five characters each.  This is useful for
-       today's 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.
 
-       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:
+</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.
 
-              <STRONG>0</STRONG>  indicates a 3-2-3 arrangement of the labels.
 
-              <STRONG>1</STRONG>  indicates a 4-4 arrangement
+</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>2</STRONG>  indicates the PC-like 4-4-4 mode.
+          <STRONG>0</STRONG>  indicates a 3-2-3 arrangement of the labels.
 
-              <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.
+          <STRONG>1</STRONG>  indicates a 4-4 arrangement
 
-       The <STRONG>slk_set</STRONG> routine (and  the  <STRONG>slk_wset</STRONG>  routine  for  the
-       wide-character library) has three parameters:
+          <STRONG>2</STRONG>  indicates the PC-like 4-4-4 mode.
 
-              <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>);
+          <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.
 
-              <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 la-
-                   bel.
+</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:
 
-       The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to
-       the <STRONG>wrefresh</STRONG> and <STRONG>wnoutrefresh</STRONG> routines.
+          <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>);
 
-       The  <STRONG>slk_label</STRONG> routine returns the current label for label
-       number <EM>labnum</EM>, with leading and trailing blanks stripped.
+          <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.
 
-       The <STRONG>slk_clear</STRONG> routine clears  the  soft  labels  from  the
-       screen.
+          <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_restore</STRONG>  routine  restores the soft labels to the
-       screen after a <STRONG>slk_clear</STRONG> has been performed.
+       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.
 
-       The <STRONG>slk_touch</STRONG> routine forces all the  soft  labels  to  be
-       output the next time a <STRONG>slk_noutrefresh</STRONG> is performed.
 
-       The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> rou-
-       tines correspond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>.
-       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-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_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.
+       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.
 
-</PRE>
-<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
-       These routines return <STRONG>ERR</STRONG> upon failure and OK (SVr4 speci-
-       fies only "an integer value other than <STRONG>ERR</STRONG>") upon success-
-       ful completion.
+       The  <STRONG>slk_touch</STRONG> routine forces all the soft labels to be output the next
+       time a <STRONG>slk_noutrefresh</STRONG> is performed.
 
-       X/Open defines no error conditions.  In  this  implementa-
-       tion
 
-              <STRONG>slk_attr</STRONG>
-                   returns the attribute used for the soft keys.
+</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).
 
-              <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  soft-
-                   keys were not initialized.
 
-              <STRONG>slk_attrset</STRONG>
-                   returns  an error if the terminal or the soft-
-                   keys were not initialized.
+</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.
 
-              <STRONG>slk_attr_set</STRONG>
-                   returns an error if the terminal or the  soft-
-                   keys  were  not initialized, or the color pair
-                   is outside the range 0..COLOR_PAIRS-1, or opts
-                   is not null.
+       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.
 
-              <STRONG>slk_color</STRONG>
-                   returns  an error if the terminal or the soft-
-                   keys were not initialized, or the  color  pair
-                   is outside the range 0..COLOR_PAIRS-1.
 
-              <STRONG>slk_init</STRONG>
-                   returns  an  error  if the format parameter is
-                   outside the range 0..3.
+</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.
 
-              <STRONG>slk_label</STRONG>
-                   returns <STRONG>NULL</STRONG> on error.
+       X/Open defines no error conditions.  In this implementation
 
-              <STRONG>slk_set</STRONG>
-                   returns an error if the terminal or the  soft-
-                   keys  were  not initialized, or the <EM>labnum</EM> pa-
-                   rameter 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.
+          <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.
 
-</PRE>
-<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
-       Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wre-</STRONG>
-       <STRONG>fresh</STRONG> is likely to follow soon.
+          <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.
 
-</PRE>
-<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
-       The XSI Curses standard, Issue 4,  describes  these  func-
-       tions.   It changes the argument type of the attribute-ma-
-       nipulation functions <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>,  <STRONG>slk_attrset</STRONG>
-       to be <STRONG>attr_t</STRONG>, and adds <STRONG>const</STRONG> qualifiers.  The format codes
-       <STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init()</STRONG> and the function <STRONG>slk_attr</STRONG> are  spe-
-       cific to ncurses.
+          <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.
 
-</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>curs_re-</STRONG>
-       <STRONG><A HREF="curs_refresh.3x.html">fresh(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
+          <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-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.
 
-                                                           <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
+
+</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>
 <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-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-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>