Refactor and clean up lots of code.

lib/stabilize_helicopter.ks

@@ -1,14 +1,15 @@
-// functions that execute comprehensive control schemes.
+// Provides stabilization functions, including Hover.
 //
-// These typically assume a global variable 'done' that will be
-// set externally when they should return.
-
+// Must define a global variable 'done', which can be set to true to cancel
+// control functions.
+//
+// Do not include both this and stabilize_rocket.ks in one program.
 
 // Helicopter-style point stability control.
 // Hover, ascend, or descend at a fixed rate.
 // Adjusts the throttle to control ascent or descent.
 // Adjusts pitch and roll to maintain zero lateral velocity.
-function PointStabilizeH {
+function Hover {
   parameter vertSpeed is 0.0.
 
   set done to false.

lib/stabilize_rocket.ks

@@ -1,10 +1,12 @@
 // Provides stabilization functions, including Hover.
-// Control functions can be canceled by actuating Action Group 9.
-
+//
+// Must define a global variable 'done', which can be set to true to cancel
+// control functions.
+//
+// Do not include both this and stabilize_helicopter.ks in one program.
 
 // Stabilizes a rocket relative to the surface, with optional vertical
-// velocity. Do not include both this and stabilize_helicopter.ks in one
-// program.
+// velocity.
 function Hover {
   parameter vertSpeed is 0.0.