+.PP
+The terminal database section
+.I "NCURSES USER-DEFINABLE CAPABILITIES"
+summarizes commonly-used user-defined capabilities
+which are used in the terminal descriptions.
+Some of those features are mentioned in \fBscreen\fR(1) or \fBtmux\fR(1).
+.PP
+.I "XTerm Control Sequences"
+provides further information on the \fBxterm\fP features
+which are used in these extended capabilities.
+.\"