ass="code">src_pos</code> and <code class="code">len</code> do not
    designate a valid range of <code class="code">src</code>, or if <code class="code">dst_pos</code> and <code class="code">len</code>
    do not designate a valid range of <code class="code">dst</code>.</li>
</ul>
</div>

<pre id="VALblit_string">val blit_string : src:string -&gt; src_pos:int -&gt; dst:bytes -&gt; dst_pos:int -&gt; len:int -&gt; unit</pre><div class="info ">
<div class="info-desc">
<p><code class="code">blit&nbsp;~src&nbsp