-
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that <STRONG>erase</STRONG>, <STRONG>werase</STRONG>, <STRONG>clear</STRONG>, <STRONG>wclear</STRONG>, <STRONG>clrtobot</STRONG>, and <STRONG>clr-</STRONG>
- <STRONG>toeol</STRONG> may be macros.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- These functions are described in the XSI Curses standard,
- Issue 4. The standard specifies that they return <STRONG>ERR</STRONG> on
- failure, but specifies no error conditions.
-
- Some historic curses implementations had, as an undocu-
- mented feature, the ability to do the equivalent of
- <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touchwin(stdscr)</STRONG> or
- <STRONG>clear(stdscr)</STRONG>. This will not work under ncurses.
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
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+ X/Open defines no error conditions. In this implementation, functions
+ using a window pointer parameter return an error if it is null.