2 ms·You can try it here: http://www.cdglabs.org/thinglab/ http://www.cdglabs.org/thinglab/ (Smalltalk-78)by xkriva11 7y agoYou can try it here: http://www.cdglabs.org/thinglab/ http://www.cdglabs.org/thinglab/ (Smalltalk-78)