/usr/share/doc/ruby-pango/examples/sample.txt is in ruby-pango 2.1.0-1.
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 | <u><span foreground="red" size="x-large" style="italic"
lang="en">Hello World!</span></u> <span background="yellow" lang="ja"
font_desc="Sans Italic 20" stretch="normal">こんにちわ世界！</span>
<span size="xx-large" face="Serif" foreground="#006600" background="#ffffee">
<span size="larger" underline="double" weight="heavy">Ruby/Pango</span> <span
rise="10000" variant="normal" weight="heavy">$Ruby-GNOME2</span>
</span>
<span strikethrough="true" size="xx-large" style="oblique" foreground="blue">ABCDEF</span>
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