<br>Are you trying to do this via eToys? I don't know whether it's available that way. Try typing that code into a workspace, though, and you should be able to make the Morph visible and invisible. You can also do this in your programs.
<br><br><div><span class="gmail_quote">On 4/23/07, <b class="gmail_sendername">Brad Fuller</b> <<a href="mailto:email@example.com">firstname.lastname@example.org</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Steven Greenberg wrote:<br>><br>> m := Morph new openInWorld.<br>> m visible: false.<br>> m visible: true.<br><br></blockquote></div><br>