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    <para><termdef><glossterm>Thread context</glossterm> represents state of
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    <para><termdef><glossterm>Thread context</glossterm> represents state of
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    the <emphasis>thread</emphasis>. Thread context is built of the context
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    the <emphasis>thread</emphasis>. Thread context is built of the context
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    registers contents, FPU state and the stack.</termdef></para>
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    registers contents, FPU state and the stack.</termdef></para>
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    <para><termdef> <glossterm>Task</glossterm> is a multi-purpose entity,
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    <para><termdef><glossterm>Task</glossterm> is a multi-purpose entity,
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    serving to <itemizedlist>
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    serving to incorporate set if its threads, provide common address space to its threads,
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        <listitem>incorporate set if its threads</listitem>
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    be an end-point in IPC.</termdef></para>
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        <listitem>provide common address space to its threads</listitem>
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        <listitem>be an end-point in IPC</listitem>
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      </itemizedlist> </termdef></para>
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    <para><termdef> <glossterm>Address space area</glossterm> is a mutually
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    <para><termdef><glossterm>Address space area</glossterm> is a mutually
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    disjunctive range of memory with the code, stack and data.
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    disjunctive range of memory with the code, stack and data.
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    </termdef></para>
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    </termdef></para>
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    <para><termdef> <glossterm>Address space</glossterm> is a aggregating
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    <para><termdef><glossterm>Address space</glossterm> is a aggregating
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    entity for address space areas, connecting them to the task.
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    entity for address space areas, connecting them to the task.
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    </termdef></para>
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    </termdef></para>
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  </section>
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  </section>
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  <section>
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  <section>
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    minimizing this overhead.</para>
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    minimizing this overhead.</para>
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    <formalpara>
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    <formalpara>
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      <title>Memory management</title>
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      <title>Memory management</title>
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      <para>Unlike the classic microkernel, HelenOS has all its memory
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      <para>HelenOS has all its memory
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      management functionality in the kernel, available to the memory
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      management functionality in the kernel, available to the memory
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      management server via the set of syscalls.</para>
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      management server via the set of syscalls.</para>
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    </formalpara>
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    </formalpara>
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    <formalpara>
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    <formalpara>
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          <listitem>
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          <listitem>
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            Interrupt controllers
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            Interrupt controllers
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          </listitem>
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          </listitem>
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          <listitem>
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          <listitem>
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            Console
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            Console and frame buffer
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          </listitem>
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          </listitem>
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          <listitem>
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            VESA &amp; frame buffer
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          </listitem>
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        </itemizedlist></para>
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        </itemizedlist></para>
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    </formalpara>
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    </formalpara>
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  </section>
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  </section>
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  <section>
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  <section>