JAL-4090 JAL-4160 JAL-4274 image export dimensions and scale factor configurable...

[jalview.git] / help / help / html / io / export.html

diff --git a/help/help/html/io/export.html b/help/help/html/io/export.html
index 04216da..c940373 100755 (executable)
--- a/help/help/html/io/export.html
+++ b/help/help/html/io/export.html
@@ -50,8 +50,28 @@
     </li>
 
   </ul>
-  <a name="htmlexport" />
   <p>
+    <strong>PNG Export Options</strong>
+  
+  <p>
+    <em>Since Jalview 2.11.3</em> it is possible to specify options when <a
+      href="../features/clarguments-reference.html#exportingimagefiles">exporting
+      figures via the command line</a> to increase the resolution of the
+    exported PNG, and configure maximum width and height settings.
+  
+  <p>You can also configure default export settings by adding the
+    following lines to
+  
+  <pre>.jalview_properties</pre>
+  <pre>BITMAP_SCALE=&lt;Scale factor multiplied by 10&gt;
+  BITMAP_WIDTH=Width of export in pixels
+  BITMAP_HEIGHT=Height of figure export in pixels
+  </pre>
+  When scale is not set, the figure will be scaled to fit in the smallest
+  specified dimension. Scale will be ignored if it results in an image
+  dimension greater than the smallest specified dimension.
+  <p>
+  <a name="htmlexport" /><p>
     <strong>Exporting alignments as Web Pages</strong>
   <p>
     In Jalview 2.9, new HTML exporting options were introduced. The