Automatic merge of T1.5.1-1080-g433d161cdb and 21 pull requests

- Pull request #891 at 9a1d6b2: Auto save
- Pull request #959 at 2452cb0: Fix TrackViewer crash on big zoom value
- Pull request #969 at 9d53199: Bugfix refocus to the main window when opening  the map window
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #882 at 8f695a4: Blueprint/train car operations UI window
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #922 at a3bc9e7: Autopilot for timetable mode
- Pull request #953 at a519452: Fix Lights Crash on Corrupt Shapes
- Pull request #962 at 46d0472: Fix pantographs on unpowered cars
- Pull request #965 at 4725f3d: style: Renormalize line endings
- Pull request #970 at 6fa5eed: feat: Remove unnecessary Windows.Forms usage
- Pull request #900 at c27f32d: DMI updates
- Pull request #903 at 9dabe97: Downloading route content (Github, zip)
- Pull request #799 at dfc715e: Consolidated wind simulation
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #885 at e267870: feat: Add notifications to Menu
- Pull request #896 at 5866028: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains
- Pull request #946 at 91a03af: Advanced track sounds
- Pull request #952 at 8347095: Investigation - Pulsing graphics
- Pull request #954 at f837ffd: Multiple Track Profiles & Superelevation Improvements
- Pull request #968 at 5310029: Initial build of adding track section identifier for rack railway

Author: openrails-bot

Source/Documentation/Manual/images/download-content-form.png

@@ -16,7 +16,24 @@ installation profile.
 
 .. image:: images/start-activity.png
 
-If not, then you must download some content and add it as an Installation Profile.
+If not, then the next ``Download Content`` form is shown where you can download content. This form is described in the next `Content` chapter.
+
+Content
+=======
+
+Clicking on the ``Content`` button makes the ``Download Content`` form popup (if not already there for an new empty Open Rails installation):
+
+.. image:: images/download-content-form.png
+
+Select the route to be installed. This list will be enlarged by the OR team when suitable routes become available.
+However it is still possible to install routes manually as described in the next chapter.
+
+* ``Install path`` and ``Browse``: Fill in or Browse to the path where the route is to be installed. Each route will be installed in it's own subdirectory.
+* ``Info``: Gives more information of the selected route. The default web browser will be started with the information page.
+* ``Install``: Installs the selected route. A popup mentions the directory where the route is to be installed before starting the actual install. Installation profile gets added also.
+* ``Start``: Some routes have default start parameters and can be started via this button with these parameters.
+* ``Delete``: Delete route with this button. Take care: whole directory including added and changed files gets deleted.
+* ``Update``: GitHub based routes can get updated after the install by means of this button. Check for updates is done when clicking this button. Or at the end of the information webpage. Also GitHub has a watch possibility for getting changes on the repository being mailed.
 
 Installation Profiles
 =====================