-This is an extension to the curses library.
-It provides callers with a hook into the \fBncurses\fR data to resize windows,
-primarily for use by programs running in an X Window terminal (e.g., xterm).
-.SS resizeterm
+If the calling program has not set up a handler for \fB\%SIGWINCH\fP
+when it initializes \fI\%ncurses\fP
+(e.g., using \fB\%initscr\fP(3X) or \fB\%newterm\fP(3X)),
+then \fI\%ncurses\fP sets a handler for \fB\%SIGWINCH\fP which notifies
+the library when a window-size event has occurred.
+The library checks for this notification
+.bP
+when reading input data,
+.bP
+when implicitly resuming program mode
+(e.g., between \fB\%endwin\fP(3X) and \fB\%wrefresh\fP(3X)),
+and
+.bP
+when explicitly resuming program mode in \fB\%restartterm\fP(3X).
+.PP
+When the library has found that the terminal's window-size has
+changed, it calls \fB\%resizeterm\fP to update its data structures.