le decision.
</p>


<div id="orgb3b2aeb" class="figure">
<p><img src="./../screenshots/group-rendering.png" alt="group-rendering.png" />
</p>
<p><span class="figure-number">Figure 18: </span>The centre building is selected. The leftmost building is in the same group, which is why it is filled in white. The optimiser can choose either to connect both these two or neither, but nothing in between.</p>
</div>

<p>
To create a group, select a set of buildings and press <b>Shift+G</b>. The selected buildings will