pref.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>entry</key>
  <dict>
    <key>cell</key>
    <string>PSLinkCell</string>
    <key>icon</key>
    <string>fruit.png</string>
    <key>label</key>
    <string>Buttons</string>
  </dict>
  <key>items</key>
  <array>


<dict>
      <key>cell</key>
      <string>PSGroupCell</string>
      <key>label</key>
      <string>A Button</string>
    </dict>

    <dict>
      <key>cell</key>
      <string>PSButtonCell</string>>
      <key>label</key>
      <string>Press Me</string>
      <key>action</key>
      <string>onPress:</string>
    </dict>
    

  
  </array>
  <key>title</key>
  <string>Buttons</string>
</dict>
</plist>