aseprite/data/widgets/layer_properties.xml

<!-- Aseprite -->
<!-- Copyright (C) 2001-2015 by David Capello -->
<gui>
<window text="Layer Properties" id="layer_properties">
  <vbox>
    <grid columns="3">
      <label text="Name:" />
      <entry text="" id="name" magnet="true" maxsize="256" minwidth="64" cell_align="horizontal" />
      <button id="user_data" icon="icon_user_data" tooltip="User Data" />

      <label text="Mode:" />
      <combobox id="mode" cell_hspan="2" />

      <label text="Opacity:" />
      <slider id="opacity" min="0" max="255" width="128" cell_align="horizontal" cell_hspan="2" />
    </grid>
  </vbox>
</window>
</gui>