+</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
+ 4BSD (1980) defined <EM>unctrl</EM> (as a macro, in <EM>unctrl.h</EM>).
+
+ SVr2 (1984) introduced <EM>delay</EM><STRONG>_</STRONG><EM>output</EM>, <EM>flushinp</EM>, and <EM>keyname</EM>.
+
+ SVr3 (1987) added <EM>filter</EM>. Later that year, SVr3.1 brought <EM>getwin</EM> and
+ <EM>putwin</EM>, reading and writing window dumps with <STRONG>fread(3)</STRONG> and <STRONG>fwrite(3)</STRONG>,
+ respectively.
+
+ SVr4 (1989) supplied <EM>use</EM><STRONG>_</STRONG><EM>env</EM>.
+
+ X/Open Curses Issue 4 (1995) specified <EM>key</EM><STRONG>_</STRONG><EM>name</EM> and <EM>wunctrl</EM>.
+
+ <EM>ncurses</EM> 5.6 (2006) added <EM>nofilter</EM>, and 6.0 (2015) <EM>use</EM><STRONG>_</STRONG><EM>tioctl</EM>.
+
+