</para>
<figure id="fig-1521">
<title>All potential uses of a book.</title>
-<graphic fileref="images/1521.png" align="center" width="50%"></graphic>
+<graphic fileref="images/1521.svg" align="center" width="50%"></graphic>
</figure>
<indexterm id='idxbooksthreetypesofusesof' class='startofrange'><primary>books</primary><secondary>three types of uses of</secondary></indexterm>
<indexterm id='idxcopyrightlawcopiesascoreissueof2' class='startofrange'><primary>copyright law</primary><secondary>copies as core issue of</secondary></indexterm>
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<figure id="fig-1541">
<title>Republishing stands at the core of this circle of possible uses of a copyrighted work.</title>
-<graphic fileref="images/1541.png" align="center" width="50%"></graphic>
+<graphic fileref="images/1541.svg" align="center" width="50%"></graphic>
</figure>
<indexterm><primary>Constitution, U.S.</primary><secondary>First Amendment to</secondary></indexterm>
<indexterm><primary>First Amendment</primary></indexterm>
</para>
<figure id="fig-1611">
<title>Picture of an old version of Adobe eBook Reader</title>
-<graphic fileref="images/1611.png" align="center" width="50%"></graphic>
+<graphic fileref="images/1611.svg" align="center" width="50%"></graphic>
</figure>
<para>
If you click on the Permissions button, you'll see a list of the