+ The <EM>background</EM> of a <EM>curses</EM> window (in the library's non-"wide"
+ configuration) is a <EM>chtype</EM> combining a set of attributes (see
+ <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>) with a character called the <EM>blank</EM> <EM>character.</EM>
+
+ The blank character is a spacing character that populates a window's
+ character cells when their contents are erased without replacement.
+ The background's attributes are combined with all non-blank characters
+ written to the window, as with the <STRONG><A HREF="curs_addch.3x.html">waddch(3x)</A></STRONG> and <STRONG><A HREF="curs_insch.3x.html">winsch(3x)</A></STRONG> families
+ of functions.
+
+ The blank character and attributes of the background combine with
+ characters written to the window as described below. The background
+ becomes a property of the character and moves with it through any
+ scrolling and insert/delete line/character operations.
+
+ To the extent possible on a given terminal, the attribute part of the
+ background is displayed as the graphic rendition of the character put
+ on the screen.
+
+
+</PRE><H3><a name="h3-bkgd_wbkgd">bkgd, wbkgd</a></H3><PRE>
+ <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> set the background property of <STRONG>stdscr</STRONG> or the specified
+ window and then apply this setting to every character cell in that
+ window.
+
+ <STRONG>o</STRONG> The rendition of every character in the window changes to the new
+ background rendition.