+ <STRONG>o</STRONG> The library then checks if the cell uses color, i.e., its color
+ pair value is nonzero. If not, it simply replaces the attributes
+ and color pair in the cell with those from the new background
+ character.
+
+ <STRONG>o</STRONG> If the cell uses color, and that matches the color in the current
+ background, the library removes attributes which may have come from
+ the current background and adds attributes from the new background.
+ It finishes by setting the cell to use the color from the new
+ background.
+
+ <STRONG>o</STRONG> If the cell uses color, and that does not match the color in the
+ current background, the library updates only the non-color
+ attributes, first removing those which may have come from the
+ current background, and then adding attributes from the new
+ background.
+
+ If the background's character value is zero, a space is assumed.
+
+ If the terminal does not support color, or if color has not been
+ started with <STRONG>start_color</STRONG>, the new background character's color
+ attribute will be ignored.
+
+
+</PRE><H3><a name="h3-getbkgd">getbkgd</a></H3><PRE>
+ The <STRONG>getbkgd</STRONG> function returns the given window's current background
+ character/attribute pair.
+
+
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ These functions are described in the XSI Curses standard, Issue 4. It
+ specifies that <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> return <STRONG>ERR</STRONG> on failure, but gives no
+ failure conditions.
+
+ The routines <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> return the integer <STRONG>OK</STRONG>, unless the library
+ has not been initialized.
+
+ In contrast, the SVr4.0 manual says <STRONG>bkgd</STRONG> and <STRONG>wbkgd</STRONG> may return <STRONG>OK</STRONG> "or a
+ non-negative integer if <STRONG>immedok</STRONG> is set", which refers to the return
+ value from <STRONG>wrefresh</STRONG> (used to implement the immediate repainting). The
+ SVr4 curses <STRONG>wrefresh</STRONG> returns the number of characters written to the
+ screen during the refresh. This implementation does not do that.
+
+
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>