Anyway, in the section about procedural selection I have two things I can't replicate.
First, the instructor selects faces from a grid, adds a polyextrude and say he presses the tilde key, witch disconnects the node, selects other faces, press enter and the polyextrude is applied to these new faces. I can't replicate these steps, the ~ doesn't seem to work for me, maybe it's because I use a mac Portuguese keyboard, can I change the Hotkey ? I don't know the name of this operation.
Then he demonstrates a attribcreate node and uses expresions like rand($PT+50) to get random values. However i get "unable to evaluate expression" errors using the same expressions. where there changes in syntax between H9 and H11 ?