+<note>
+<para>
+This is only available in UTM mode.
+</para>
+</note>
+</section>
+
+</section> <!-- End File Types -->
+
+<section><title>Layers</title>
+
+<para>
+Layers supported by &appname; are:
+</para>
+<itemizedlist>
+<listitem><para><xref linkend="Aggregate"/></para></listitem>
+<listitem><para><xref linkend="TrackWaypoint"/></para></listitem>
+<listitem><para><xref linkend="GPS"/></para></listitem>
+<listitem><para><xref linkend="DEM"/></para></listitem>
+<listitem><para><xref linkend="Coordinate"/></para></listitem>
+<listitem><para><xref linkend="Maps"/></para></listitem>
+<listitem><para><xref linkend="GeoRef"/></para></listitem>
+<listitem><para><xref linkend="MapnikRendering"/></para></listitem>
+</itemizedlist>
+<para>
+For each layer there are a few standard options:
+</para>
+<itemizedlist>
+<listitem><para>Properties - Layer setup / configuration settings</para></listitem>
+<listitem><para>Cut</para></listitem>
+<listitem><para>Copy</para></listitem>
+<listitem><para>Paste</para></listitem>
+<listitem><para>Delete</para></listitem>
+<listitem><para>Visibility - This checkbox on the Layers Panel controls whether the layer is shown in the viewport or not</para></listitem>
+</itemizedlist>
+<para>
+The cut/copy/paste options can be accessed in a variety of ways once the layer has been selected:
+</para>
+<itemizedlist>
+<listitem><para>Standard keys: <keycap>Ctrl+x|c|v</keycap></para></listitem>
+<listitem><para>Main menu <guimenuitem>Edit</guimenuitem></para></listitem>
+<listitem><para>From the right click menu</para></listitem>
+<listitem><para>Buttons at the bottom of the Layers Panel</para></listitem>
+</itemizedlist>
+<para>
+Default values used for each layer's properties can be altered via the <menuchoice><guimenu>Edit</guimenu><guisubmenu>Layer Defaults</guisubmenu></menuchoice> menu options.
+</para>
+<para>
+See the individual section for detail about each layer.
+</para>
+</section>
+
+<section id="TrackWaypoint" xreflabel="TrackWaypoint"><title>TrackWaypoint Layer</title>
+<para>
+TrackWaypoint layers display GPS data (tracks, routes and waypoints).
+</para>
+<para>One way to create new waypoints is to copy a
+latitude/longitude coordinate pair, such as the one shown on most
+geocaches, and paste it into an active TrackWaypoint layer. &appname; can
+automatically recognize several variations of the lat/lon format.
+</para>
+<para>
+By right-clicking on tracks, routes or waypoints in the <xref linkend="gc_layers_panel"/>, you can access many commands on them.
+You can easily find a specific track, route or waypoint by expanding the appropriate containing Tracks, Routes or Waypoints sublayer in the
+layers panel to show all the individual items and then typing the name of the track, route or waypoint.
+</para>
+
+<para>
+The containing Tracks, Routes or Waypoints sublayers are only shown when items of that type exist.
+To start creating them enter into a create mode via either the <guibutton>Create</guibutton> toolbar commands or the <guimenuitem>New</guimenuitem> menu commands.
+</para>
+
+<para>
+The sublayers also offer right click menu options.
+These are the same as those available at the TrackWaypoint level, but only those that relate to the sublayer type.
+</para>
+
+<para>
+By default routes are coloured red. Tracks are automatically assigned a spread of colours.
+</para>
+
+<para>
+Most operations available on tracks are available on routes, except for functionality that relies on having timestamps - since routes by definition have no timing information. Thus for example, uploading a route to OpenStreetMap Traces is not available nor is Geotagging on a route.
+It is possible to convert between Tracks and Routes, although converting from a Track to a Route may involve a loss of information (hence you are required to confirm this operation before it happens).
+</para>
+
+<section><title>Layer Operations</title>
+<para>
+The layer has a context menu with several operations.
+</para>
+
+<section><title>View Layer</title>
+<para>
+Version1.1+: This will automatically move the viewport and select the best zoom level to see the whole layer (i.e. all tracks, routes and waypoints).
+</para>
+</section>
+
+<section><title>View</title>
+
+<section id="track_view_all"><title>View All Tracks</title>
+<para>
+Version1.1+: This will automatically move the viewport and select the best zoom level to see the all the tracks in the layer (ignoring positions of any routes or waypoints).
+</para>
+</section>
+
+<section id="route_view_all"><title>View All Routes</title>
+<para>
+Version1.4+: This will automatically move the viewport and select the best zoom level to see the all the routes in the layer (ignoring positions of any tracks or waypoints).
+</para>
+</section>
+
+<section id="wp_view_all"><title>View All Waypoints</title>
+<para>
+Version1.1+: This will automatically move the viewport and select the best zoom level to see the all the waypoints in the layer (ignoring positions of any tracks or routes).
+</para>
+</section>
+
+</section>
+
+<section><title>Goto Center of Layer</title>
+<para>
+This will automatically move the viewport to see the whole layer (i.e. tracks, routes and waypoints). It does not adjust the zoom level.
+</para>
+</section>
+
+<section id="wp_goto"><title>Goto Waypoint</title>
+<para>
+This opens a dialog box to enter a name of waypoint to search for. If it is found the viewport is centred on it.
+</para>
+<note>
+<para>
+Note this search is not very clever and only finds exact matches.
+You are probably better off expanding the waypoint list and directly start typing, as mentioned above, which finds a match based on each letter typed.
+</para>
+</note>
+</section>
+
+<section><title>Export Layer</title>
+<para>
+The layer (all tracks, routes and waypoints) can be exported to following file formats:
+</para>
+<orderedlist>
+ <listitem>
+ <para>GPX</para>
+ </listitem>
+ <listitem>
+ <para>GPSPoint</para>
+ </listitem>
+ <listitem>
+ <para>GPSMapper</para>
+ </listitem>
+ <listitem>
+ <para>Google's KML</para>
+ </listitem>
+ <listitem>
+ <para>Any GPSBabel <ulink url="http://www.gpsbabel.org/capabilities.html">File Formats</ulink></para>
+ </listitem>
+ <listitem>
+ <para>GeoJSON. Via the program <ulink url="https://github.com/mapbox/togeojson">togeojson</ulink></para>
+ <para>This option will not be available if the program is not detected on your system.
+ See <ulink url="https://www.npmjs.org/package/togeojson">here</ulink> for the installation method.</para>
+ </listitem>
+</orderedlist>
+<para>
+Version1.1+: An individual track can be exported to a GPX file via the track menu.
+</para>
+</section>
+
+<section id="finish_track"><title>Finish Track or Route</title>
+<para>
+Selecting this option ends the creation of that individual track or route.
+</para>
+<note>
+<para>
+This is only available when a track or route is being created by the <xref linkend="track_create"/> or <xref linkend="route_create"/> tools.
+</para>
+</note>
+</section>
+
+<section><title>New</title>
+<section id="new_wp"><title>New Waypoint</title>
+<para>
+This opens a dialog box to create a new waypoint. A default name will be suggested and the default position is the center of the viewport.
+</para>
+</section>
+<section id="new_track"><title>New Track</title>
+<para>
+This turns on the <xref linkend="track_create"/> tool.
+</para>
+</section>
+<section id="new_route"><title>New Route</title>
+<para>
+This turns on the <xref linkend="route_create"/> tool.
+</para>
+</section>
+</section>
+
+<section><title>Geotag Images</title>
+<para>
+This starts the Geotagging Images dialog against all tracks in the layer.
+See <link linkend="geotagging">Geotagging</link> for further detail.
+</para>
+</section>
+
+<section><title>Acquire</title>
+<para>
+This offers the same choice from <xref linkend="acquire"/> methods as on the <guimenu>File</guimenu> menu.
+However when invoked from here, the results will be stored in this layer (instead of creating a new one).
+</para>
+</section>
+
+<section><title>Upload</title>
+
+<section id="gps_upload"><title>Upload to GPS</title>
+<para>
+This opens a dialog to select the GPS Device and port to which the layer information will be transferred.
+</para>
+<para>
+The types of GPS information (tracks, routes or waypoints) to be transferred can be selected.
+</para>
+<para>
+Tracks, Routes or Waypoints that are invisible will not be transferred.
+</para>
+</section>
+
+<section id="osm_upload" xreflabel="Upload To OSM" ><title>Upload To OSM</title>
+<para>
+This opens a dialog to upload all tracks and waypoints to <ulink url="http://openstreetmap.org/">OpenStreetMap</ulink> traces.
+Useful if you are an OpenStreetMap contributor (you will need an OpenStreetMap account), these details can be stored in &appname; <xref linkend="prefs_osm"/>
+</para>
+<para>
+ &appname; allows you to edit a track, e.g. remove duplicate points, perhaps remove track points leading to your home and then upload it to OpenStreetMap.
+</para>
+<warning>
+<para>
+The password is transferred <emphasis role="bold">unencrypted</emphasis> in every request sent to the OpenStreetMap server. This is due to the use of OpenStreetMap's basic authentication method.
+</para>
+<para>Currently &appname; does not support the <ulink url="http://oauth.net/">OAuth</ulink> mechanism.</para>
+</warning>
+</section>
+
+</section>
+
+<section><title>Delete</title>
+<para>Offers deletion of various parts of a TrackWaypoint layer:</para>
+<section id="delete_all_tracks"><title>Delete All Tracks</title>
+<para>Deletes all the tracks in this layer.</para>
+</section>
+<section id="delete_selection_tracks"><title>Delete Tracks from Selection</title>
+<para>Opens a dialog with list of all the tracks from this layer to choose the ones to delete.</para>
+</section>
+<section id="delete_all_routes"><title>Delete All Routes</title>
+<para>Deletes all the routes in this layer.</para>
+</section>
+<section id="delete_selection_routes"><title>Delete Routes from Selection</title>
+<para>Opens a dialog with list of all the routes from this layer to choose the ones to delete.</para>
+</section>
+<section id="delete_all_waypoints"><title>Delete All Waypoints</title>
+<para>Deletes all the waypoints in this layer.</para>
+</section>
+<section id="delete_selection_waypoints"><title>Delete Waypoints from Selection</title>
+<para>Opens a dialog with list of all the waypoints from this layer to choose the ones to delete.</para>
+</section>
+</section>
+
+<section><title>Filter</title>
+<section><title>Simplify All Tracks</title>
+<para>
+This opens dialog to request the number of points each track will be simplified using <application>GPSBabel</application>. The result is put into a new layer. The simplification method removes points considered to be in a 'near straight line', thus reducing the number of points and attempting to keep the most important turning points.
+</para>
+</section>
+<section><title>Compress Tracks</title>
+<para>
+Enables compression of tracks and routes via <application>GPSBabel</application>'s <emphasis>Crosstrack</emphasis> simplify method.
+It opens a dialog to request the Error factor value which is the maximum allowable error that may be introduced by removing a single point.
+It is expressed a distance in units as specified by the <xref linkend="prefs"/> distance option.
+Thus a higher value will remove more points.
+The result is put into a new layer.
+</para>
+</section>
+<section><title>Remove Duplicate Waypoints</title>
+<para>
+Remove Duplicate Waypoints - fairly self explainatory, with the results created in a new layer.
+</para>
+<note>
+<para>
+However it only considers a precise position (waypoints only 1 metre away from each other are considered different) and also doesn't consider if the waypoints have different comments, symbols or images.
+</para>
+</note>
+</section>
+</section>
+
+<section id="filter_with_track"><title>Filter With <emphasis>Trackname</emphasis></title>
+<para>
+This runs <application>GPSBabel</application> on the layer using information from a previously selected track (select via the track menu "Use With Filter" option) with the following command types:
+</para>
+<itemizedlist>
+<listitem><para>Waypoints Inside This</para></listitem>
+<listitem><para>Waypoints Outside This</para></listitem>
+</itemizedlist>
+<para>
+The result is generated in a new Track/Waypoint layer.
+</para>
+</section>
+
+<section><title>Geotag Images</title>
+<para>
+This starts the Geotagging Images dialog using the specific track.
+See <link linkend="geotagging">Geotagging</link> for further detail.
+</para>
+</section>
+
+<section><title>List Tracks or Routes</title>
+<para>
+Opens a new dialog with the list. As described in the Aggregrate layer <xref linkend="track_list"/>
+</para>
+</section>
+
+<section><title>List Waypoints</title>
+<para>
+Opens a new dialog with the list. As described in the Aggregrate layer <xref linkend="waypoint_list"/>
+</para>
+</section>
+
+</section><!-- End TRW Layer Options -->
+
+<section><title>Track and Route Sublayer Options</title>
+<para>Repeats options available at the TrackWaypoint level, but only those for tracks and routes:</para>
+<itemizedlist>
+<listitem><para>Finish Track or Route. Same as the layer <link linkend="finish_track">Finish Track or Route</link></para></listitem>
+<listitem><para>New Track or Route. Same as the layer <link linkend="new_track">New Track</link> or <link linkend="new_route">New Route</link></para></listitem>
+<listitem><para>View All Tracks or Routes. Same as the layer <link linkend="track_view_all">View All Tracks</link> or <link linkend="route_view_all">View All Routes</link></para></listitem>
+<listitem><para>Delete All Tracks or Routes. Same as the layer <link linkend="delete_all_tracks">Delete All Tracks</link> or <link linkend="delete_all_routes">Delete All Routes</link></para></listitem>
+<listitem><para>Delete Tracks or Routes from Selection. Same as the layer <link linkend="delete_selection_tracks">Delete Tracks from Selection</link> or <link linkend="delete_selection_routes">Delete Routes from Selection</link></para></listitem>
+<listitem><para>List Tracks or Routes. Opens a new dialog with the list. As described in the Aggregrate layer <xref linkend="track_list"/></para></listitem>
+</itemizedlist>
+<para>Also gives other options for handling multiple items:</para>
+<itemizedlist>
+<listitem><para>Sort. Gives the ability to sort the items in the treeview alphabetically or by date.</para></listitem>
+<listitem><para>Visibility. Offers options to quickly control the visibility of all items within the sublayer, as per <xref linkend="vis_options"/></para></listitem>
+</itemizedlist>
+</section>
+
+<section xreflabel="Track and Route Properties"><title>Track and Route Properties</title>
+<para>
+This shows several tabs for properties and useful statistics about a track or a route, including elevation-distance and speed-time graphs (if data is available).
+Moving the mouse pointer over the graph displays values related to that point along the track.
+You can click on these graphs to jump to the point in the track.
+You can reverse it, delete duplicates, split at marked position or split a track from its component segments (discontinuous breaks in a track) into separate tracks.
+</para>
+<section id='track_properties' xreflabel="Track and Route Properties"><title>Track and Route Properties Tab</title>
+<para>
+<figure>
+<title>Properties Tab: Example</title>
+<screenshot>
+ <graphic format="PNG" fileref="figures/Track_properties.png"/>
+</screenshot>
+</figure>
+</para>
+</section>
+<section id='track_statistics' xreflabel="Track and Route Statistics"><title>Track and Route Statistics Tab</title>
+<para>
+<figure>
+<title>Statistics Tab: Example</title>
+<screenshot>
+ <graphic format="PNG" fileref="figures/Track_statistics.png"/>
+</screenshot>
+</figure>
+</para>
+</section>
+<section id='track_elev_graphs' xreflabel="Track Elevation Graph"><title>Track Elevation Graph</title>
+<para>
+<figure>
+<title>Elevation Distance Tab: Example</title>
+<screenshot>
+ <graphic format="PNG" fileref="figures/Track_elevation_graph.png"/>
+</screenshot>
+</figure>
+</para>
+<para>
+The following colors are used in the elevation-distance graph:
+</para>
+<variablelist>
+<varlistentry>
+<term><emphasis>Main</emphasis> colour - this is dependent on your Desktop theme - often blue by default</term>
+<listitem><para>elevation data in graph</para></listitem>
+</varlistentry>
+<varlistentry>
+<term>Yellow</term>
+<listitem>
+<para>no elevation data</para>
+</listitem>
+</varlistentry>
+<varlistentry>
+<term>Green</term>
+<listitem>
+<para>elevation data from DEM</para>
+</listitem>
+</varlistentry>
+<varlistentry>
+<term>Red</term>
+<listitem>
+<para>speed</para>
+</listitem>
+</varlistentry>
+</variablelist>
+</section>
+</section>
+
+<section><title>Track and Route Operations</title>
+
+<section><title>Finish Track</title>
+<para>
+Selecting this option ends the creation of the individual track.
+</para>
+<note>
+<para>
+This is only available when a track is being created by the <xref linkend="track_create"/> tool.
+</para>
+</note>
+</section>
+
+<section><title>Goto</title>
+<para>
+This centers the viewport on the selected position on the track:
+</para>
+<itemizedlist>
+<listitem><para>Startpoint</para></listitem>
+<listitem><para>"Center" - the notional center from the bounds of the track</para></listitem>
+<listitem><para>Endpoint</para></listitem>
+<listitem><para>Version1.1+: Highest Altitude</para></listitem>
+<listitem><para>Version1.1+: Lowest Altitude</para></listitem>
+<listitem><para>Version1.1+: Maximum Speed (Not Available on Routes)</para></listitem>
+</itemizedlist>
+</section>
+
+<section><title>View</title>
+<para>
+Version1.1+: This centers the viewport on the track and selects the best zoom level to see it.
+</para>
+</section>
+
+<section><title>Combine</title>
+<section><title>Merge By Time</title>
+<para>
+This operation repeatedly tries to merge the right-clicked track
+with tracks in the same TrackWaypoint layer. The tracks which are
+merged are those which have at least one trackpoint less than some
+threshold time away. This way, if you somehow end up with lots of small
+segments (say, caused by turning the GPS on and off) you can merge them
+easily into one track.
+</para>
+<note>
+<para>
+This is not available on routes as they have no timestamps.
+</para>
+</note>
+</section>
+
+<section><title>Merge With Other Tracks</title>
+<para>
+This opens a dialog listing the other tracks in the same TrackWaypoint layer, from which one can select the other tracks to merge with.
+</para>
+</section>
+
+<section><title>Merge Segments</title>
+<para>
+Combines track segments. Effectively removing track segment markers to leave one segment for the whole track.
+</para>
+</section>
+
+<section><title>Append Track or Route</title>
+<para>
+Enable joining of a single track to the end of the current track.
+This opens a dialog listing the other tracks in the same TrackWaypoint layer from which one can make the selection.
+</para>
+</section>
+</section>
+
+<section><title>Split</title>
+<section><title>Split By Time</title>
+<para>
+This operation will split a single track into segments wherever the
+time interval between successive trackpoints is larger than some
+threshold. This is useful when processing raw NMEA GPS data, especially
+taken over a long time.
+</para>
+<note>
+<para>
+This is not available on routes as they have no timestamps.
+</para>
+</note>
+</section>
+
+<section><title>Split By Number of Points</title>
+<para>
+Version1.2+: This operation will split a single track into segments by the number of points specified.
+This can be useful with devices which may have limits on the number of points it supports.
+</para>
+</section>
+
+<section><title>Split Segments</title>
+<para>
+Splits track segments into new tracks.
+</para>
+<note>
+<para>
+This is not available on routes as they do not have route segments.
+</para>
+</note>
+</section>
+
+<section id='trkpt_split' xreflabel="Split at Trackpoint"><title>Split at Trackpoint</title>
+<para>
+Splits the track at the currently selected trackpoint.
+</para>
+<para>
+The current track will finish at this trackpoint.
+A new track will start from a copy of this trackpoint.
+</para>
+<note>
+<para>
+This is only enabled when a trackpoint is selected.
+</para>
+</note>
+</section>
+</section>
+
+<section><title>Insert Points</title>
+<note>
+<para>
+These options are only enabled when a trackpoint is selected.
+</para>
+</note>
+<section><title>Insert Point Before Selected Point</title>
+<para>
+Inserts a track point halfway between the previous track point and the current track point.
+All track point properties are interpolated between the two points.
+</para>
+</section>
+<section><title>Insert Point After Selected Point</title>
+<para>
+Inserts a track point halfway between the current track point and the next track point.
+All track point properties are interpolated between the two points.
+</para>
+</section>
+</section>
+
+<section><title>Delete Points</title>
+<section><title>Delete Selected Point</title>
+<para>
+Deletes the currently selected track point.
+</para>
+<note>
+<para>
+This is only enabled when a trackpoint is selected.
+</para>
+</note>
+</section>
+<section><title>Delete Points With the Same Position</title>
+<para>
+Deletes subsequent points that have the same position (but have different timestamps).
+</para>
+</section>
+<section><title>Delete Points With the Same Time</title>
+<para>
+Deletes subsequent points that have the same time stamp (but may have different positions).
+</para>
+<note>
+<para>
+This is not available on routes as they have no timestamps.
+</para>
+</note>
+</section>
+
+</section>
+
+<section id="transform" xreflabel="Transform"><title>Transform</title>
+<para>
+These options alter the data of trackpoints of a track but not add or remove trackpoints.
+And don't seem to fit any other category :)
+</para>
+<section><title>Apply DEM data</title>
+<para>
+If any DEM data is loaded, this will apply the DEM data to give the track elevation data.
+Two ways of applying DEM data are offered:
+<orderedlist>
+<listitem><para>Keep. Retains the existing elevation data of trackpoints and only those missing an elevation value are set.</para></listitem>
+<listitem><para>Overwrite. Elevation data are set on all trackpoints even if they already elevation values.</para></listitem>
+</orderedlist>
+</para>
+</section>
+<section><title>Smooth Missing Elevation data</title>
+<para>
+In various locations across the world, there are missing DEM values (AKA DEM Holes) from the SRTM data.
+This is particularly noticeable in mountainous areas.
+Two ways of applying elevation data to trackpoints that do not have elevation values are offered:
+<orderedlist>
+<listitem><para>Interpolated. Missing elevation data is interpolated between the previous and next known values.</para></listitem>
+<listitem><para>Flat. Elevation data is filled in from the last previously known value.</para></listitem>
+</orderedlist>
+</para>
+</section>
+<section>
+<title>Convert to Track or Route</title>
+<para>
+If this is a Route then it will convert it to a Track.
+</para>
+<para>
+If this is Track then convert it to a Route.
+</para>
+<note>
+<para>
+Converting from a Track to a Route may involve a loss of information, in particular timestamp values (hence you are required to confirm this operation before it happens).
+</para>
+</note>
+</section>
+<section>
+<title>Anonymize Times</title>
+<para>
+Timestamp information of a track can be shifted to be all offset from 1901-01-01.
+</para>
+<para>
+Thus the timestamps themselves will no longer reveal exactly when a track was taken.
+However the relative difference between the timestamps is kept thus one is still able to calculate some properties such as speeds along the track.
+</para>
+<note>
+<para>
+This is not available for routes, as they have no timestamps.
+</para>
+</note>
+</section>
+<section>
+<title>Interpolate Times</title>
+<para>
+Trackpoint timestamps between the first and last points are calculated such that track is travelled at equal speed.
+This is mostly useful when tracks don't have timestamps and you wish to recreate your trip (e.g. you've forgotten to turn on your GPS or the batteries have run out)
+Thus edit the first and last trackpoints to set the approximate times of your trip and then use this to give approximate times along the track.
+When used on tracks with timestamps this will overwrite the existing timestamps.
+</para>
+<note>
+<para>
+This is not available for routes, as they have no timestamps.
+</para>
+</note>
+</section>
+</section>
+
+<section><title>Export Track as GPX</title>
+<para>
+Version1.1+: This allows exporting the track as a GPX file by opening a file save dialog.
+</para>
+</section>
+
+<section><title>Extend Track End</title>
+<para>
+Changes the current tool to add trackpoints to the end of the track.
+</para>
+</section>
+
+<section><title>Extend Using Route Finder</title>
+<para>
+Enables the Route Finder tool. Thus on a subsequent left click in the viewport, a route is calculated from the end of track to that point using the default route service and applied to the track.
+</para>
+</section>
+
+<section><title>Upload</title>
+
+<section><title>Upload to GPS</title>
+<para>
+Same as the layer <link linkend="gps_upload">Upload to GPS</link> command, but only applies to the track.
+</para>
+</section>
+
+<section><title>Upload to OSM</title>
+<para>
+Same as the layer <link linkend="osm_upload">Upload to OSM</link> command, but only applies to the track.
+</para>
+</section>
+