Help: Document VS generator default platform selection

Help/generator/Visual Studio 10 2010.rst

@@ -15,6 +15,8 @@ projects (Database, Website, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:

Help/generator/Visual Studio 11 2012.rst

@@ -15,6 +15,8 @@ projects (JavaScript, Database, Website, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:

Help/generator/Visual Studio 12 2013.rst

@@ -15,6 +15,8 @@ projects (JavaScript, Powershell, Python, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:

Help/generator/Visual Studio 14 2015.rst

@@ -12,6 +12,8 @@ projects (JavaScript, Powershell, Python, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:

Help/generator/Visual Studio 15 2017.rst

@@ -28,6 +28,8 @@ by default.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:

Help/generator/Visual Studio 9 2008.rst

@@ -6,6 +6,8 @@ Generates Visual Studio 9 2008 project files.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example: