This file is indexed.

/usr/share/sdformat/1.5/scene.sdf is in sdformat-sdf 2.0.0-6.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<!-- Scene -->
<element name="scene" required="1">
  <description>Specifies the look of the environment.</description>

  <element name="ambient" type="color" default="0.4 0.4 0.4 1.0" required="1">
    <description>Color of the ambient light.</description>
  </element>

  <element name="background" type="color" default=".7 .7 .7 1" required="1">
    <description>Color of the background.</description>
  </element>

  <element name="sky" required="0">
    <description>Properties for the sky</description>
    <element name="time" type="double" default="10.0" required="0">
      <description>Time of day [0..24]</description>
    </element>
    <element name="sunrise" type="double" default="6.0" required="0">
      <description>Sunrise time [0..24]</description>
    </element>
    <element name="sunset" type="double" default="20.0" required="0">
      <description>Sunset time [0..24]</description>
    </element>

    <element name="clouds" required="0">
      <description>Sunset time [0..24]</description>
      <element name="speed" type="double" default="0.6" min="0.0" required="0">
        <description>Speed of the clouds</description>
      </element>

      <element name="direction" type="double" default="0.0"
               min="0.0" max="3.1456" required="0">
        <description>Direction of the cloud movement</description>
      </element>
      <element name="humidity" type="double" default="0.5"
               min="0" max="1" required="0">
        <description>Density of clouds</description>
      </element>

      <element name="mean_size" type="double" default="0.5"
               min="0" max="1" required="0">
        <description>Average size of the clouds</description>
      </element>

      <element name="ambient" type="color" default=".8 .8 .8 1" required="0">
        <description>Ambient cloud color</description>
      </element>
    </element>
  </element>

  <element name="shadows" type="bool" default="true" required="1">
    <description>Enable/disable shadows</description>
   </element>

  <element name="fog" required="0">
    <description>Controls fog</description>
    <element name="color" type="color" default="1 1 1 1" required="0">
      <description>Fog color</description>
    </element>
    <element name="type" type="string" default="none" required="0">
      <description>Fog type: constant, linear, quadratic</description>
    </element>
    <element name="start" type="double" default="1.0" min="0.0" required="0">
      <description>Distance to start of fog</description>
    </element>
    <element name="end" type="double" default="100.0" min="0.0" required="0">
      <description>Distance to end of fog</description>
    </element>
    <element name="density" type="double" default="1.0" min="0.0" required="0">
      <description>Density of fog</description>
    </element>
  </element>

  <element name="grid" type="bool" default="true" required="0">
    <description>Enable/disable the grid</description>
  </element>

</element> <!-- End Scene -->