diff --git a/README.md b/README.md
index b26e4a1..6eb6021 100644
--- a/README.md
+++ b/README.md
@@ -31,4 +31,18 @@ Note that the trailing backslash is required.
 
 ```
 $ rosrun rtshell rtls nextage:15005/
-```
\ No newline at end of file
+```
+
+Or after version XXXX (TBD), you can simply run without `rosrun rtshell`:
+
+```
+$ rtls nextage:15005/
+```
+
+Show the ports detail of particular RT component
+--------------------------------------------------
+
+```
+rtcat -l localhost:15005/sh.rtc
+```
+(for `X`.rtc, get the list of working RTC by `rtls`.)