">main</span>
  [<span class="mdzsyn-symbol">&amp;</span>]
  (<span class="mdzsyn-coresym">def</span> <span class="mdzsyn-symbol">app</span> (<span class="mdzsyn-symbol">gtk-application-new</span> <span class="mdzsyn-string">"org.janet-lang.example.HelloApp"</span> <span class="mdzsyn-number">0</span>))
  (<span class="mdzsyn-symbol">g-signal-connect-data</span> <span class="mdzsyn-symbol">app</span> <span class="mdzsyn-string">"activate"</span> (<span class="mdzsyn-symbol">cb</span>) <span class="mdzsyn-sy