; for the second arc to be joined to
the end of the first.</p>

<p style="margin-top: 1em">Finally, observe that a string,
alone, is treated as text to be surrounded by an invisible
box of a size either specified by width and height
attributes or by the defaults <b>textwid</b> and
<b>textht</b>. Both are initially zero (because we
don&rsquo;t know the default font size).</p>
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