+ <STRONG>is_linetouched</STRONG>
+ returns an error if the window pointer is
+ null, or if the line number is outside the
+ window. Note that ERR is distinct from <STRONG>TRUE</STRONG>
+ and <STRONG>FALSE</STRONG>, which are the normal return values
+ of this function.
+
+ <STRONG>wtouchln</STRONG>
+ returns an error if the window pointer is
+ null, or if the line number is outside the
+ window.
+
+
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>