Updates from David Megginson.

README.running

@@ -8,10 +8,100 @@ Windows: runfgfs.bat
 (hopefully) the correct $FG_ROOT directory specified.
 
 
+First Flight
+============
+
+By default, the plane should be looking more or less straight down a
+runway, and the mouse cursor should be a regular pointer.  The
+following steps will help you to get into the air:
+
+- click the right mouse button once, so that a cross cursor
+  appears (now, the mouse will act as a control yoke)
+
+- while holding down the left mouse button, push the mouse cursor up
+  until the engine is at full power (the throttle indicator is on the
+  left side of the HUD), then release the left mouse button
+
+- when the plane is moving fast enough (say, 100 knots for the default 
+  Navion), slowly pull the mouse cursor down (with no buttons pressed) 
+  to raise the elevators until the plane rolls off the runway and into
+  the air
+
+- while holding down the left mouse button, move the mouse cursor down 
+  slightly to ease up on the throttle, then release the left mouse
+  button
+
+- move the mouse up, down, and sideways as necessary to establish
+  level flight -- small movements are best, or you may lose control of
+  the plane
+
+- click the right mouse button once more, so that a double-arrow
+  cursor appears (now, the mouse will allow you to look around)
+
+- move the mouse around to look out of the plane at different angles
+
+- press the left mouse button once to return the view to front and
+  centre
+
+- click the right mouse button *twice*, so that the cross cursor
+  appears again (you're in yoke mode)
+
+- now that you know how to operate the throttle, ailerons, and
+  elevators (as well as how to look around), try to circle around and
+  land back on the runway (best of luck)
+
+
+Mouse controls
+==============
+
+It is possible to manipulate the basic flight controls and the view
+using only the mouse.  Clicking the right mouse button toggles the
+mouse among three different modes:
+
+1. Pointer mode (the default: mouse cursor is a pointer)
+2. Yoke mode (mouse cursor is a cross)
+3. Look-around mode (mouse pointer is a double arrow)
+
+In yoke mode and look-around mode, the mouse cursor will remain
+trapped in the Flight Gear window.
+
+
+Yoke mode
+---------
+
+In yoke mode (mouse cursor as cross), mouse movement adjusts the main
+flight controls, depending on which buttons you press.
+
+With no button pressed:
+(like a control yoke on an airplane)
+- horizontal movement controls the ailerons
+- vertical movement controls the elevators
+
+With left button pressed:
+- horizontal movement controls the brakes
+- vertical movement controls the throttle
+
+With middle button pressed:
+- horizontal movement controls the rudder
+- vertical movement controls the trim
+
+
+Look-around mode
+----------------
+
+In look-around mode (mouse cursor as double arrow), mouse movement
+changes the viewing direction: horizontal movement scrolls the view
+horizontally, and vertical movement scrolls the view vertically in the
+direction of mouse movement.
+
+To return the view to front and center, click the left mouse button
+once.
+
+
 Keyboard controls
 =================
 
-Flying is mainly done via the numeric keypad.  There is some
+It is also possible to fly using the numeric keypad.  There is some
 unresolved wierdness with the GLUT libraries and keyboard input, so
 for now, the state of the "Num Lock" key is important.
 
@@ -46,12 +136,43 @@ Brakes
 
 Autopilot
 ---------
-    Shift + A               Enable autopilot (defaults to heading of 000)
-    Shift + S               Disable autopilot
-    Shift + D               Lock autopilot heading to current heading
+    Control + A             Toggle autopilot altitude lock.
+    Control + H             Toggle autopilot heading lock.
+    Control + S             Toggle autopilot autothrottle.
+    Control + T             Toggle autopilot terrain follow.
+
+Simulation
+----------
+
+    ESC                     Quit Flight Gear.
+
+    a                       Increase speedup.
+    b                       Toggle brakes.
+    h                       Dim HUD.
+    i                       Revert to full HUD.
+    m                       Increase time warp.
+    p                       Toggle pause.
+    t                       Increase time warp delta.
+    v                       Toggle external view mode.
+    x                       Zoom out (narrow field of view).
+    z                       Increase visibility.
+
+    Shift + A               Decrease speedup.
+    Shift + H               Brighten HUD
+    Shift + I               Minimize HUD
+    Shift + M               Decrease time warp.
+    Shift + P               Toggle 2D panel display.
+    Shift + T               Decrease time warp delta.
+    Shift + W               Toggle fullscreen/window mode.
+    Shift + X               Zoom out (widen field of view).
+    Shift + Z               Decrease visibility.
 
 Other
 -----
-    F8 = Toggle fog modes
+    F2 = Reload tile cache.
+    F6 = Toggle autopilot target location.
+    F8 = Toggle fog modes (off, fastest, nicest)
     F9 = Toggle textures on/off
     F10 = Toggle menu
+    F11 = Set autopilot altitude
+    F12 = Set autopilot heading