i don't know how contol this applet~

[Jung Seng Won]

i am planning to making soma cube. i am looking for data about soma cube, and find this site. " http://users.ids.net/~salberg/soma/Soma.html " i try to control block by using SHIFT, CTORL key but i can't. i want to know how am i control these block~ i will very thank you for giving me tip. Have a good day~

firstly, i am sorry, i am from korea. and i am not good in wriitting english so please understand~ Thank you everyone~