Now Versor is moving by s-expressions, and it highlights the whole expression (in this case, since we started part way through, it starts the highlight where we started; but now it will keep moving to expression starts, so from now on whole expressions will be highlighted). This highlighted region, which Versor calls the Selection, is what Versor editing commands will act on. Ignore the stuff about shell commands, it is an artefact of the demo screenshotting program!