This file is indexed.

/usr/share/help/C/gnome-help/shell-windows-lost.page is in gnome-user-guide 3.4.1-1.

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
<page xmlns="http://projectmallard.org/1.0/"
      type="topic"
      style="task"
      id="shell-windows-lost">

  <info>

    <link type="guide" xref="shell-windows#working-with-windows"/>

    <desc>Check the activities overview or other workspaces.</desc>
    <revision pkgversion="3.4.0" date="2012-02-19" status="review"/>
    <credit type="author">
      <name>GNOME Documentation Project</name>
      <email>gnome-doc-list@gnome.org</email>
    </credit>

    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
  </info>

<title>Find a lost window</title>
  <p>A window on a different workspace, or hidden behind another window, is easily
 found using the <link xref="shell-terminology">activities overview</link>:</p>

<list>
 <item>
  <p>Open the activities overview and make sure the <gui>Windows</gui> view is
 selected. If the missing window is on the current
 <link xref="shell-windows#working-with-workspaces">workspace</link>, it will be
 shown here in thumbnail. Simply click the thumbnail to redisplay the window, or</p>
 </item>
 <item>
  <p>Click on the different workspaces in the
 <link xref="shell-terminology">workspace selector</link> on the right-hand side
 of the screen to try to find your window, or</p>
 </item>
 <item>
  <p>Right-click on the application in the dash and its open windows will be
 listed. Click on the window in the list to switch to it.</p>
 </item>
</list>

<p>Using the window switcher:</p>
<list>
 <item>
  <p>Press <keyseq><key>Alt</key><key>Tab</key></keyseq> to display the window
 switcher. Continue to hold down the <key>Alt</key> key and press <key>Tab</key>
 to cycle through the open windows, or <keyseq><key>Shift</key><key>Tab</key></keyseq>
 to cycle backwards.</p>
 </item>
 <item>
  <p>If an application has multiple open windows, hold down <key>Alt</key> and press
 <key>`</key> (or the key above <key>Tab</key>) to step through them.</p>
 </item>
</list>

</page>