Block added to Manual

Author: Chris Jakeman

Source/Documentation/Manual/options.rst

@@ -530,9 +530,10 @@ Content Options
 
 .. image:: images/options-content.png
 
-This window allows you to add, remove or modify access to additional MSTS
-installations or miniroute installations for Open Rails. Installations
-located on other drives, or on a USB key, can be added even if they are
+This window allows you to add, remove or modify access to content.
+Each profile may be a folder containing one or more routes, or an MSTS
+installation. 
+Profiles located on other drives, or on a USB key, can be added even if they are
 not always available.
 
 Click on the *Add* button, and locate the desired installation. OR will
@@ -541,6 +542,12 @@ appear in the *Installation set:* window on the main menu form. Modify
 the name if desired, then click *OK* to add the new path and name to
 Open Rails.
 
+Please do not store content or any files within the folder containing the Open Rails software.
+This is because the Updater operates by wiping out the contents of that folder before replacing it
+with a new updated version. 
+It would be unfriendly for users to lose content that they have stored there, so
+attempts to add a profile folder stored there are blocked and lead to an error message. 
+
 To remove an entry (note that this does not remove the installation
 itself!) select the entry in the window, and click *Delete*, then *OK*
 to close the window. To modify an entry, use the *Change...* button to

Source/Documentation/Manual/start.rst

@@ -8,24 +8,30 @@ After having successfully installed Open Rails (see the Installation
 Manual), to run the game you must double-click on the Open Rails icon on 
 the desktop, or on the OpenRails.exe file.
 
-The OpenRails main window will appear. This displays your available MSTS 
-installation profiles.
+The OpenRails main window will appear. 
+If you have an MSTS installation in place, this will be displayed as your available 
+installation profile.
 
 .. _start-picture:
 
 .. image:: images/start-activity.png
 
+If not, then you must download some content and add it as an Installation Profile.
+
 Installation Profiles
 =====================
 
-In the simplest case, where you have only a basic MSTS installation (see 
+Each profile may be a folder containing one or more routes, or an optional MSTS
+installation.
+
+In the case where you already have an MSTS installation (see 
 paragraph :ref:`Does Open Rails need MSTS to run? <intro-MSTSneeded>` for a precise definition of 
 a MSTS installation) OR should already correctly point to that 
 installation. To check this, you should initially see under ``Installation 
 Profile`` the string ``- Default -``. Under ``Route`` you should see the 
 name of one of the MSTS routes in your MSTS installation.
 
-You can easily add, remove or move other MSTS installations and select 
+You can easily add, remove or move other content profiles and select 
 among them (e.g. if you have any so-called ``mini-routes`` installed.). 
 Click on the ``Options`` button and select the ``Content`` tab. See the 
 :ref:`Content Options <options-Content>` discussed below for more instructions.