[DOC] Mention the new maps switch-xy property.

[andy/viking.git] / help / C / viking.xml

diff --git a/help/C/viking.xml b/help/C/viking.xml
index be4b5542dfb0ea0cbb98f979a105fd6f16df9fb0..84d0736e37cb00d635bd1343b919d2973c4f06eb 100644 (file)
--- a/help/C/viking.xml
+++ b/help/C/viking.xml
@@ -2730,7 +2730,11 @@ Accept: */*
             </varlistentry>
             <varlistentry>
               <term>url</term>
-              <listitem><para>the parametrized address of the tile, in the spirit of C printf format, with 3 "%d" fields for X, Y and Z (zoom level) (eg. "/%d/%d/%d.png")</para></listitem>
+              <listitem><para>the parametrized address of the tile, in the spirit of C printf format, with 3 "%d" fields for Z, X and Y (in that order) (eg. "/%d/%d/%d.png")</para></listitem>
+            </varlistentry>
+            <varlistentry>
+              <term>switch-xy (optional)</term>
+              <listitem><para>Swap the X,Y values around in the URL parametrized ordering.</para></listitem>
             </varlistentry>
           </variablelist>
         </para>
@@ -2989,6 +2993,17 @@ Accept: */*
            <para>trkpt_selected_statusbar_format=KEATDN</para>
            <para>This string is in the Message Format Code</para>
          </listitem>
+         <listitem>
+           <para>viewport_history_size=20</para>
+         </listitem>
+         <listitem>
+           <para>viewport_history_diff_dist=500</para>
+           <para>In metres.</para>
+           <para>
+             Go Back or Go Forward requests over this range from the last history location will move back to that position.
+             If within this range it will skip over this location and move on to the next saved history location.
+           </para>
+         </listitem>
        </orderedlist>
 
        <section>