CLI with RTT Show all commands

Question

Using SDK 17 
 There must be a way to show all commands in RTT without needing the tab to work right? 
 Ive been digging through the code but don't see where the magic happens. 
 I assume I'd need to add a top level 'Help' command for this to work? 
 
 Where does the tab handler hide? 
 
 Thanks 
 Keith Vasilakes

Keith V · Accepted Answer

apparently you have to have echo turned on, or it skips it, per line 5 above. 
 I still think there should be a better default