+.PP
+Note that some keys may be the same as commonly used control
+keys, e.g., \fBKEY_ENTER\fP versus control/M, \fBKEY_BACKSPACE\fP versus control/H.
+Some curses implementations may differ according to whether they
+treat these control keys specially (and ignore the terminfo), or
+use the terminfo definitions.
+\fBNcurses\fR uses the terminfo definition.
+If it says that \fBKEY_ENTER\fP is control/M,
+\fBgetch\fR will return \fBKEY_ENTER\fP
+when you press control/M.
+.PP