This file is indexed.

/usr/share/doc/libspiro0/README is in libspiro0 20071029-8ubuntu1.

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
This is a shared library designed to give FontForge (and others) access to
Raph Levien's spiro splines. 

You may (possibly) be able to obtain more recent versions of Spiro from
    http://levien.com/garden/ppedit/
use the get-spiro-src.sh script to do so.

To build, type
    ./configure
    make
    make install

Currently I extract very little from spiro, just the bare minimum to convert
a series of (marked) points to a set of cubic bezier curves which ff can use.