+ <STRONG>o</STRONG> Other implementations differ. For instance, NetBSD curses allows
+ <STRONG>TABSIZE</STRONG> to be set through an environment variable. This implemen-
+ tation does not.
+
+ NetBSD curses does not support hardware tabs; it uses the <STRONG>init_tabs</STRONG>
+ capability and the <STRONG>TABSIZE</STRONG> variable only for updating the virtual
+ screen.
+
+ <STRONG>ESCDELAY</STRONG> is an extension in AIX curses:
+
+ <STRONG>o</STRONG> In AIX, the units for <STRONG>ESCDELAY</STRONG> are <EM>fifths</EM> of a millisecond.
+
+ <STRONG>o</STRONG> The default value for AIX's <STRONG>ESCDELAY</STRONG> is 0.1 seconds.
+
+ <STRONG>o</STRONG> AIX also enforces a limit of 10,000 seconds for <STRONG>ESCDELAY</STRONG>; this im-