/usr/share/doc/quantum-espresso/html/labels.pl is in quantum-espresso-data 5.0.2-5build1.
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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | # LaTeX2HTML 2008 (1.71)
# Associate labels original text with physical files.
$key = q/Sec:Libraries/;
$external_labels{$key} = "$URL/" . q|node11.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:manconf/;
$external_labels{$key} = "$URL/" . q|node10.html|;
$noresave{$key} = "$nosave";
$key = q/Sec:para/;
$external_labels{$key} = "$URL/" . q|node15.html|;
$noresave{$key} = "$nosave";
$key = q/Sec:Installation/;
$external_labels{$key} = "$URL/" . q|node9.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:para/;
$external_labels{$key} = "$URL/" . q|node17.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Guidelines/;
$external_labels{$key} = "$URL/" . q|node5.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Contacts/;
$external_labels{$key} = "$URL/" . q|node4.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Terms/;
$external_labels{$key} = "$URL/" . q|node6.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Examples/;
$external_labels{$key} = "$URL/" . q|node13.html|;
$noresave{$key} = "$nosave";
$key = q/SubSec:LinuxPCMPI/;
$external_labels{$key} = "$URL/" . q|node14.html|;
$noresave{$key} = "$nosave";
1;
# LaTeX2HTML 2008 (1.71)
# labels from external_latex_labels array.
$key = q/SubSec:Examples/;
$external_latex_labels{$key} = q|2.6|;
$noresave{$key} = "$nosave";
$key = q/SubSec:LinuxPCMPI/;
$external_latex_labels{$key} = q|2.7.6|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Terms/;
$external_latex_labels{$key} = q|1.4|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Contacts/;
$external_latex_labels{$key} = q|1.2|;
$noresave{$key} = "$nosave";
$key = q/SubSec:Guidelines/;
$external_latex_labels{$key} = q|1.3|;
$noresave{$key} = "$nosave";
$key = q/SubSec:para/;
$external_latex_labels{$key} = q|3.2|;
$noresave{$key} = "$nosave";
$key = q/Sec:para/;
$external_latex_labels{$key} = q|3|;
$noresave{$key} = "$nosave";
$key = q/Sec:Installation/;
$external_latex_labels{$key} = q|2.2|;
$noresave{$key} = "$nosave";
$key = q/Sec:Libraries/;
$external_latex_labels{$key} = q|2.4|;
$noresave{$key} = "$nosave";
$key = q/SubSec:manconf/;
$external_latex_labels{$key} = q|2.3.1|;
$noresave{$key} = "$nosave";
1;
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