Automatic merge of T1.5.1-799-gb02a6e5d3 and 14 pull requests

- Pull request #570 at 3539862: Experimental glTF 2.0 support with PBR lighting
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #882 at a055bca: Blueprint/train car operations UI window
- Pull request #885 at 8f94333: feat: Add notifications to Menu
- Pull request #886 at 6c0785b: Scene viewer extension to TrackViewer
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #896 at 5866028: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains
- Pull request #897 at 0a9d939: feat: Improved system information collection
- Pull request #899 at 1a49cc4: Duplex steam engines - Booster Engine addition
- Pull request #903 at 6c9da3f: Downloading route content (Github, zip)
- Pull request #907 at 9b0b04f: Bug fix for https://bugs.launchpad.net/or/+bug/2047300 Dynamic tracks disappear after long tunnel
- Pull request #908 at 4b4afe3: feat: supports switching adhesion precisions
- Pull request #911 at 6834af0: docs: Add refactoring as a special type of PR

Author: openrails-bot

Source/Documentation/Manual/physics.rst

@@ -1268,10 +1268,10 @@ Steam Locomotives with Multiple Engines
 
 Some steam locomotives can have multiple steam engines (ie separate steam 
 cylinders connected to different wheels), such as the 4-4-4-4 locomotive or 
-an articulated Garrat locomotive.
+an articulated Garratt locomotive.
 
-To configure these types of locomotives configurations for multiple steam 
-engines need to be added to the engine section of the ENG file, would have the 
+To configure these types of locomotives configurations, multiple steam 
+engines need to be added to the engine section of the ENG file. These should have the 
 following format::
 
     ORTSSteamEngines ( x
@@ -1290,7 +1290,7 @@ The following parameters can be used to configure the steam engine::
 ``MaxIndicatedHorsepower`` - maximum indicated horsepower of steam engine.
 ``AttachedAxle`` - the axle wheelset that the steam engine is attached to.
 
-To specify the engine as a Booster engine the following additional parameters 
+To specify the engine as a Booster engine, the following additional parameters 
 can be used::
 
 ``BoosterCutoff`` - the cutoff point for the Booster steam cylinder.
@@ -1299,6 +1299,30 @@ can be used::
 ``AuxiliarySteamEngineType`` - by inserting "Booster" into this parameter the 
 engine is defined as a Booster engine.
 
+The following steam effects are defined for the 2nd multuple engine:
+
+i) Steam Exhausts - these are the exhausts from the two steam cylinders, and would be 
+located wherever the steam exhausted out of the cylinders, 
+``CylinderSteamExhaust2_1FX``, ``CylinderSteamExhaust2_2FX``, where "x_yFX", 
+x = engine number and y = cylinder number.
+
+ii) Cylinder Cocks Exhaust - the exhaust out of the cylinder drainage cocks, 
+``Cylinders2_11FX``, ``Cylinders2_12FX``, ``Cylinders2_21FX``, ``Cylinders2_22FX``, 
+where "x_yzFX", x = engine number, y = cylinder number and z = cylinder position.
+
+The following steam effects are defined for the Booster Engine:
+
+i) Steam Exhausts - these are the exhausts from the two steam cylinders, and would be 
+located wherever the steam exhausted out of the cylinders, 
+``BoosterCylinderSteamExhaust01FX``, ``BoosterCylinderSteamExhaust02FX``
+
+ii) Cylinder Cocks Exhaust - the exhaust out of the cylinder drainage cocks, 
+``BoosterCylinders11FX``, ``BoosterCylinders12FX``, ``BoosterCylinders21FX``, 
+``BoosterCylinders22FX``, where "xyFX", x = cylinder number, and y = cylinder position.
+
+The following CAB controls have been defined, ``STEAM_BOOSTER_AIR``, ``STEAM_BOOSTER_IDLE``,
+ ``STEAM_BOOSTER_LATCH``, ``STEAM_BOOSTER_PRESSURE``.
+
 Locomotive Types
 ................
 

Source/Documentation/Manual/sound.rst

@@ -417,6 +417,15 @@ Trigger       Function
 261           WindowOpening
 =========     =====================================
 
+The following triggers are related to the steam booster engine:
+
+=========     =====================================
+Trigger       Function
+=========     =====================================
+321           BoosterCylinderCocksOpen
+322           BoosterCylinderCocksClose
+=========     =====================================
+
 Variable Triggers
 -----------------