attroff,  wattroff,  attron,  wattron,  attrset, wattrset,
       standend, wstandend, standout, wstandout - curses  charac-
       ter and window attribute control routines


       #include <curses.h>
       int attroff(int attrs);
       int wattroff(WINDOW *win, int attrs);
       int attron(int attrs);
       int wattron(WINDOW *win, int attrs);
       int attrset(int attrs);
       int wattrset(WINDOW *win, int attrs);
       int standend(void);
       int wstandend(WINDOW *win);
       int standout(void);
       int wstandout(WINDOW *win);
       attr_t attr_get(void);
       attr_t wattr_get(WINDOW *);
       int attr_off(attr_t attrs);
       int wattr_off(WINDOW *, attr_t attrs);
       int attr_on(attr_t attrs);
       int wattr_on(WINDOW *, attr_t attrs);
       int attr_set(attr_t attrs);
       int wattr_set(WINDOW *, attr_t attrs);
       int  chgat(int  n,  attr_t  attr,  short color, const void
       int wchgat(WINDOW *, int n, attr_t attr,
             short color, const void *opts)
       int mvchgat(int y, int x, int n, attr_t attr,
             short color, const void *opts)
       int mvwchgat(WINDOW *, int y, int x, int n, attr_t attr,
             short color, const void *opts)


       These routines manipulate the current  attributes  of  the
       named window.  The current attributes of a window apply to
       all characters that are written into the window with  wad-
       dch,  waddstr  and  wprintw.  Attributes are a property of
       the character, and move with  the  character  through  any
       scrolling and insert/delete line/character operations.  To
       the extent possible, they  are  displayed  as  appropriate
       modifications  to  the graphic rendition of characters put
       on the screen.

       The routine attrset sets the  current  attributes  of  the
       given  window to attrs.  The routine attroff turns off the
       named attributes without turning any other  attributes  on
       or  off.  The routine attron turns on the named attributes
       without affecting any others.  The routine standout is the
       same  as  attron(A_STANDOUT).  The routine standend is the
       same as attrset(A_NORMAL) or attrset(0), that is, it turns
       off all attributes.
       the given window; attr_get returns the  current  attribute
       for   stdscr.   The  remaining  attr_*  functions  operate
       exactly like the  corresponding  attr*  functions,  except
       that they take arguments of type attr_t rather than int.

       The routine chgat changes the attributes of a given number
       of characters starting at the current cursor  location  of
       stdscr.   It  does not update the cursor and does not per-
       form wrapping.  A character count of -1  or  greater  than
       the  remaining window width means to change attributes all
       the way to the end of the current line.  The wchgat  func-
       tion generalizes this to any window; the mvwchgat function
       does a cursor move before acting.  In these functions, the
       color  argument  is  a  color-pair  index (as in the first
       argument of  init_pair,  see  curs_color(3X)).   The  opts
       argument  is  not  presently used, but is reserved for the
       future (leave it NULL).

       The following video attributes, defined in <curses.h>, can
       be passed to the routines attron, attroff, and attrset, or
       OR'ed with the characters passed to addch.

       center ; l l .  A_NORMAL  Normal  display  (no  highlight)
       A_STANDOUT     Best  highlighting  mode  of  the terminal.
       A_UNDERLINE    Underlining     A_REVERSE Reverse     video
       A_BLINK   Blinking  A_DIM     Half  bright A_BOLD    Extra
       bright or bold A_PROTECT Protected mode  A_INVIS   Invisi-
       ble  or  blank mode A_ALTCHARSET   Alternate character set
       A_CHARTEXT     Bit-mask    to    extract    a    character
       COLOR_PAIR(n)  Color-pair number n

       The following macro is the reverse of COLOR_PAIR(n):

       PAIR_NUMBER(attrs) Returns the pair number associated
                          with the COLOR_PAIR(n) attribute.

       The  return values of many of these routines are not mean-
       ingful (they are implemented as macro-expanded assignments
       and  simply  return their argument).  The SVr4 manual page
       claims (falsely) that these routines always return 1.


       Note that attroff,  wattroff,  attron,  wattron,  attrset,
       wattrset, standend and standout may be macros.


       All  these functions are supported in the XSI Curses stan-
       dard, Issue 4.  The standard defined  the  dedicated  type
       for  highlights,  attr_t,  which  is  not  defined in SVr4
       curses. The functions taking attr_t arguments are not sup-
       tional  functions  attron/attroff/attrset  can  manipulate
       attributes  other  than A_BLINK, A_BOLD, A_DIM, A_REVERSE,
       A_STANDOUT, or A_UNDERLINE is "unspecified".   Under  this
       implementation  as  well  as  SVr4 curses, these functions
       correctly manipulate all other  highlights  (specifically,

       XSI  Curses added the new entry points, attr_get, attr_on,
       attr_off,  attr_set,   wattr_on,   wattr_off,   wattr_get,
       wattr_set.   These  are intended to work with a new series
       of highlight macros prefixed with WA_.

       center ; l l .  WA_NORMAL Normal  display  (no  highlight)
       WA_STANDOUT    Best  highlighting  mode  of  the terminal.
       WA_UNDERLINE   Underlining  WA_REVERSE     Reverse   video
       WA_BLINK  Blinking  WA_DIM    Half  bright WA_BOLD   Extra
       bright or bold WA_ALTCHARSET  Alternate character set

       The XSI curses standard specifies that each pair of corre-
       sponding  A_  and WA_-using functions operates on the same
       current-highlight information.

       The XSI standard extended conformance level adds new high-
       TICAL (and corresponding WA_ macros for each)  which  this
       curses does not yet support.


       curses(3X),        curs_addch(3X),        curs_addstr(3X),