This file is indexed.

/usr/share/help/C/evince/finding.page is in evince-common 3.10.3-0ubuntu10.

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
<page xmlns="http://projectmallard.org/1.0/"

      type="topic" style="task"
      id="finding">

  <info>
    <link type="guide" xref="index#reading"/>
    <desc>Find a word or phrase in a document.</desc>

    <revision pkgversion="3.2" version="0.1" date="2011-09-05" status="final"/>
    <credit type="author">
      <name>Phil Bull</name>
      <email>philbull@gmail.com</email>
    </credit>
    <license>
      <p>Creative Commons Share Alike 3.0</p>
    </license>

  </info>

<title>Finding text in a document</title>
<steps>
    <item><p>Click <guiseq><gui>Edit</gui><gui>Find</gui></guiseq> or press
    <keyseq><key>Ctrl</key><key>F</key></keyseq> or <key>/</key> to display a
    search box. </p></item>

    <item><p>Type the word or phrase you want to look for and a search will start
    automatically.</p></item>

    <item><p>The <gui>Find Previous</gui> and <gui>Find Next</gui> buttons let you skip from
    one search result to another.</p></item>

    <item>
     <p>To hide the search bar, click anywhere in the document.</p>
    </item>
</steps>

<p>
If the word or phrase you searched is not present in the entire document, the message will say <em>Not found</em>.  However, if it appears in the document at least once, the message will inform you of how many times the word you searched occur on each page.  This is apparent if you skip from one result to another as described above or scroll through the document.
</p>

<note>
  <p>
Only PDF documents are searchable. Some PDF documents are not searchable because their text
is encoded in the document as an image.
  </p>
</note>

</page>