+\fBlynx\fR(1),
+\fBmutt\fR(1),
+and other curses applications,
+using high-level calls to libraries such as \fBcurses\fR(3X).
+It is also used via low-level calls by non-curses applications
+which may be screen-oriented (such as \fB@CLEAR@\fP(1))
+or non-screen (such as \fB@TABS@\fP(1)).
+.PP