This file is indexed.

/usr/share/help/C/gnome-help/net-wireless-airplane.page is in gnome-user-docs 3.28.1-0ubuntu1.

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

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
<page xmlns="http://projectmallard.org/1.0/"
      xmlns:its="http://www.w3.org/2005/11/its"
      type="topic" style="task"
      id="net-wireless-airplane">

  <info>
    <link type="guide" xref="net-wireless"/>

    <revision pkgversion="3.4.0" date="2012-02-20" status="final"/>
    <revision pkgversion="3.10" date="2013-11-10" status="review"/>
    <revision pkgversion="3.18" date="2015-09-28" status="final"/>
    <revision pkgversion="3.24" date="2017-03-26" status="final"/>

    <credit type="author">
      <name>GNOME Documentation Project</name>
      <email>gnome-doc-list@gnome.org</email>
    </credit>
    <credit type="editor">
      <name>Michael Hill</name>
      <email>mdhillca@gmail.com</email>
      <years>2015</years>
    </credit>
    <credit type="editor">
      <name>Ekaterina Gerasimova</name>
      <email>kittykat3756@gmail.com</email>
      <years>2015</years>
    </credit>

    <desc>Open Network Settings and switch Airplane Mode to ON.</desc>
    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
  </info>

<title>Turn off wireless (airplane mode)</title>

<p>If you have your computer on an airplane (or some other area where wireless
 connections are not allowed), you should switch off your wireless. You may
 also want to switch off your wireless for other reasons (to save battery power,
 for example).</p>

  <note>
    <p>Using <em>Airplane Mode</em> will completely turn off all wireless
    connections, including WiFi, 3G and Bluetooth connections.</p>
  </note>

  <p>To turn on airplane mode:</p>

  <steps>
    <item>
      <p>Open the <gui xref="shell-introduction#activities">Activities</gui> overview and
      start typing <gui>Network</gui>.</p>
    </item>
    <item>
      <p>Click on <gui>Network</gui> to open the panel.</p>
    </item>
    <item>
      <p>Switch <gui>Airplane Mode</gui> to <gui>ON</gui>. This will turn off
      your wireless connection until you disable airplane mode again.</p>
    </item>
  </steps>

  <note style = "tip">
    <p>You can turn off your WiFi connection from the 
    <gui xref="shell-introduction#yourname">system menu</gui> by clicking on 
    the connection name and choosing <gui>Turn Off</gui>.</p>
  </note>

</page>