s="constant">EGL_CONTEXT_CLIENT_VERSION</code>
            attribute is only supported if the EGL version is 1.3 or
            greater.
        </p>
        <p>
            A <em class="firstterm">process</em> is a single execution environment,
            implemented in a single address space, consisting of one or more threads.
        </p>
        <p>
            A <em class="firstterm">thread</em> is one of a set of subprocesses that
            share a single address space, but maintain separate progra