To stop the programme at any point use the alt key plus the control
 and 't' pressing all three keys together. 

There appears to be problem accessing the information button on the 
first screen in the PC version.

Make sure that the text file Lingo is in the same folder as Kc2

This programme is copyrighted by Rupert Wegerif. 
(r.b.wegerif@open.ac.uk)