Mention toolbar options relating to light volumes

doc/manual.adoc

@@ -532,3 +532,19 @@ A selected light entity can be moved by dragging inside the small center box,
 and it can be resized by dragging outside the edge of the light volume. Unlike
 brushes, light volumes will by default resize symmetrically, so that the center
 point does not move during the resize.
+
+There are a couple of options on the top toolbar which control the display and
+behaviour of light volumes:
+
+[cols="1,3,10"]
+|===
+a|image::view_show_lightradii.png[align="center",width=24]|*Show all light volumes*|
+If enabled, light volume boundaries will be rendered in the 2D view for _all_
+light entities, not just selected entities. The default behaviour is to show
+only the center box for unselected light entities.
+a|image::dragresize_symm.png[align="center",width=24]|*Drag-resize entities symmetrically*|
+If enabled (the default), light entities will be resized symmetrically, without
+moving the center point. If disabled, lights will be resized like brushes:
+dragging an edge will move only that edge, while the opposite edge remains
+fixed.
+|===

doc/manual.html

@@ -1300,14 +1300,50 @@ <h4 id="_creating_lights">Creating lights</h4>
 brushes, light volumes will by default resize symmetrically, so that the center
 point does not move during the resize.</p>
 </div>
+<div class="paragraph">
+<p>There are a couple of options on the top toolbar which control the display and
+behaviour of light volumes:</p>
+</div>
+<table class="tableblock frame-all grid-all spread">
+<colgroup>
+<col style="width: 7.1428%;">
+<col style="width: 21.4285%;">
+<col style="width: 71.4287%;">
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><div><div class="imageblock" style="text-align: center">
+<div class="content">
+<img src="img/view_show_lightradii.png" alt="view show lightradii" width="24">
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Show all light volumes</strong></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">If enabled, light volume boundaries will be rendered in the 2D view for <em>all</em>
+light entities, not just selected entities. The default behaviour is to show
+only the center box for unselected light entities.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div><div class="imageblock" style="text-align: center">
+<div class="content">
+<img src="img/dragresize_symm.png" alt="dragresize symm" width="24">
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Drag-resize entities symmetrically</strong></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">If enabled (the default), light entities will be resized symmetrically, without
+moving the center point. If disabled, lights will be resized like brushes:
+dragging an edge will move only that edge, while the opposite edge remains
+fixed.</p></td>
+</tr>
+</tbody>
+</table>
 </div>
 </div>
 </div>
 </div>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2018-08-08 21:01:26 BST
+Last updated 2018-08-08 21:35:53 BST
 </div>
 </div>
 </body>