File moon-lander-readme.patch of Package moon-lander

--- README.txt
+++ README.txt
@@ -17,6 +17,37 @@
 
 Moon Lander is a 2D game of gravity.  Land your ship on the lading pad.  Don't go too fast, or you will crash.
 
+-----
+
+Flight Director
+
+During powered descent from low-phi (nearly parallel to the horizon) orbit, the Apollo Lunar Module Guidance and Navigation Computer presented the pilot with two oscilloscope displays.
+
+This flight director attempts to simplify the same feel.
+
+When enabled, the flight director displays a cross-hairs and comet-trail.  For a perfect landing, the cross-hairs should be on the center of the desired landing pad and the comet-trail should be perpendicular to the landing pad.
+
+The cross-hairs indicates the lowest altitude if vertical thrust is used continuously, and the furthest translation if horizontal deceleration is used continuously.  The comet-trail indicates the current velocity direction and speed (if sufficiently small).
+
+In general, you should never let the cross-hairs drop much below the level of the landing pad, because even with continuous thrust, you will drop below the level of the landing pad (and presumably hit the terrain).
+
+In general, unless necessary to avoid terrain, you should avoid letting the cross-hairs pass the landing pad, because you will waste fuel overshooting the pad and returning.
+
+Likewise, in general, you should avoid letting the comet-trail get too flat, lest you waste fuel racing over the terrain to a straight descent from too-high over the landing pad.
+
+In general, you should use the comet-trail as a rough guide to clear the terrain by the minimum amount that you are sure of.
+
+-----
+
+Autopilot
+
+When enabled, the autopilot maintains a minimum-fuel course to the landing beacon (the blinking light on the nearest landing pad).
+
+The autopilot is unaware of intervening terrain, so you as pilot must provide terrain separation.
+
+You can provide terrain separation by firing the vertical and horizontal thrusters.  The autopilot will not override your commands, but you can override the autopilot commands.
+
+In general, to conserve fuel, you should fire the appropriate horizontal thruster just enough to clear terrain to the nearest landing pad.
 
 -----
 
@@ -56,6 +87,10 @@
 
 Changelog:
 
+2005-05-06:
+  Improved autopilot and added flight director.
+2002-03-17:
+  Added minimum-fuel autopilot.
 2001-08-29 - (1.0pre1):
   Made windows port, changed all game art and sounds to Free art and sounds (geekd, rdaniels), added demo mode (mheckman), added options (geekd).  This is the last version before 1.0 (find those bugs!)
 2001-07-14 - (0.9.0):
@@ -91,6 +126,7 @@
 Brian "Mo" Degenhardt - bmd@mp3.com: 
 Fancy terrain.
 
-magigames.org
-
+Robert Meier - robert.meier@computer.org:
+Flight director, Autopilot
 
+magigames.org