Updated manual and documentation

docs/manual/understanding.html

@@ -864,27 +864,7 @@ but excluding any interface access codes.
 from one interface type to another, for all possible combinations. See the
 <a class="reference internal" href="interfaces.html#interfaces-modes"><span class="std std-ref">Interface Modes</span></a> section for a conceptual overview of the
 different interface modes, and how they are configured.</p>
-<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>Full ────── ✓ ──┐              ┌── ✓ ── Full
-AP ──────── ✓ ──┼───&gt; Full &gt;───┼── ✕ ── AP
-Boundary ── ✓ ──┤              ├── ✓ ── Boundary
-Roaming ─── ✓ ──┘              └── ✓ ── Roaming
-
-Full ────── ✕ ──┐              ┌── ✓ ── Full
-AP ──────── ✕ ──┼────&gt; AP &gt;────┼── ✕ ── AP
-Boundary ── ✕ ──┤              ├── ✓ ── Boundary
-Roaming ─── ✕ ──┘              └── ✓ ── Roaming
-
-Full ────── ✓ ──┐              ┌── ✓ ── Full
-AP ──────── ✓ ──┼─&gt; Roaming &gt;──┼── ✕ ── AP
-Boundary ── ✕ ──┤              ├── ✕ ── Boundary
-Roaming ─── ✕ ──┘              └── ✕ ── Roaming
-
-Full ────── ✓ ──┐              ┌── ✓ ── Full
-AP ──────── ✓ ──┼─&gt; Boundary &gt;─┼── ✕ ── AP
-Boundary ── ✓ ──┤              ├── ✓ ── Boundary
-Roaming ─── ✕ ──┘              └── ✕ ── Roaming
-</pre></div>
-</div>
+<img alt="_images/if_mode_graph_b.png" src="_images/if_mode_graph_b.png" />
 </div>
 </div>
 </div>