Adding -T to the usage too.

st.c

@@ -4259,9 +4259,11 @@ usage(void)
 {
 	die("%s " VERSION " (c) 2010-2015 st engineers\n"
 	"usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
-	"          [-i] [-t title] [-w windowid] [-e command ...] [command ...]\n"
+	"          [-i] [-t title] [-T title] [-w windowid] [-e command ...]"
+	" [command ...]\n"
 	"       st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
-	"          [-i] [-t title] [-w windowid] [-l line] [stty_args ...]\n",
+	"          [-i] [-t title] [-T title] [-w windowid] [-l line]"
+	" [stty_args ...]\n",
 	argv0);
 }