diff --git a/man/terminfo.tail b/man/terminfo.tail
index bd8568f..08980df 100644
--- a/man/terminfo.tail
+++ b/man/terminfo.tail
@@ -28,6 +28,28 @@ to applications:
 .bP
 User-defined capability strings whose name begins
 with \*(``k\*('' are treated as function keys.
+.IP
+For example \fBxterm\fP uses this to define names for modified cursor-
+and editing-keypad keys, which are just the xterm modifier code appended
+to the name of the shifted key.
+The delete-key (\fBkdc\fR) can thus be represented as follows:
+.IP
+.TS
+center;
+l l l
+l l l
+lw15 lw15 lw15.
+\fBXterm code	Modifier	Extended Name\fP
+
+1 (or missing)	Normal	kdc
+2	Shift	kDC
+3	Alt	kDC3
+4	Shift + Alt	kDC4
+5	Control	kDC5
+6	Shift + Control	kDC6
+7	Alt + Control	kDC7
+8	Shift + Alt + Control	kDC8
+.TE
 .bP
 The types (boolean, number, string) determined by address@hidden@\fP
 can be inferred by successful calls on \fBtigetflag\fP, etc.