Hello Peter, PS> to the class being displayed. The effect is basically an PS> "irb-anywhere" which you can arbitrarily interleave with any number of So it can crash anywhere :-) SCNR. Yes maybe its possible to transfer part of the language (all?) into an smalltalk VM. But you can never get all the binary extensions to work, an emulation layer would kill all your speed benefits if possible at all. So maybe you should simply announce a ruby branch called SmallRuby, since this would not have so much todo with the current ruby anymore. But i'm courious whats your result in the next years. Is this your Ph.D thesis ? -- Best regards, emailto: scholz at scriptolutions dot com Lothar Scholz http://www.ruby-ide.com CTO Scriptolutions Ruby, PHP, Python IDE 's