Hi! Is there a way to select multiple control points of the polygon in SBuilder in order to set their height? I'm making a river and since its shape is really curvy I just can't find enough strength in me to select each vertex (out of more than 300) to set individual heights. Another approach I'm about to try is to set whole polygon height to -9999 and use few flattens below, but it would be really nice to know if multiple selection works in SBuilder. Another question - is it possible to break line into few independent ones? The question comes from the same river problem, because I have it's shape (the one I used for "make poly") and idea of using several flattens would be very handy if I could break that exact shape into separate shapes for flatten. Thank you. P.S. and here is my third question - any function like "select by name" available in SB?