-</PRE>
-<H2>NOTES</H2><PRE>
- Note that <STRONG>border_set</STRONG>, <STRONG>hline_set</STRONG>, <STRONG>mvhline_set</STRONG>, <STRONG>mvvline_set</STRONG>,
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ Upon successful completion, these functions return <STRONG>OK</STRONG>. Otherwise, they
+ return <STRONG>ERR</STRONG>.
+
+ Functions using a window parameter return an error if it is null.
+
+ Functions prefixed with "mv" first perform cursor movement and fail if
+ the position (<EM>y</EM>, <EM>x</EM>) is outside the window boundaries.
+
+
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
+ Note that <STRONG>border_set</STRONG>, <STRONG>hline_set</STRONG>, <STRONG>mvhline_set</STRONG>, <STRONG>mvvline_set</STRONG>,