--- a/LuaAPI.wiki	Sat Feb 10 16:28:16 2018 +0000
+++ b/LuaAPI.wiki	Sat Feb 10 16:39:18 2018 +0000
@@ -679,29 +679,33 @@
 </code>
 
 === <tt>!SetVisualGearValues(vgUid, X, Y, dX, dY, Angle, Frame, !FrameTicks, State, Timer, Tint)</tt> ===
-This allows manipulation of many of the visual gear values. In the case of `vgtCircle`, the visual gear values are mapped as follows:
+This allows manipulation of many of the visual gear values of the visual gear `vgUid`. All visual gear values are numbers. Each visual gear may be using these parameters differently, but the *usual* meaning of these is the following:
 
  * `X`, `Y`: Position
- * `State`: Radius.
- * `Timer`: Thickness
- * `FrameTicks`: Pulsation speed (`0` to disable)
- * `dX`, `dY`: min/max pulsation opacity (`0`-`255`)
+ * `dX`, `dY`: Speed along the X and Y axis
+ * `Angle`: Current rotation
+ * `Frame`: Image frame, if using a sprite sheet
+ * `FrameTicks`: ???
+ * `State`: Helper value to save some internal state
+ * `Timer`: Time in milliseconds until it expires
  * `Tint`: RGBA color
 
-Most visual gears require little to no modification of parameters.
+Some visual gears interpret these values differently, just like normal gears. See [VisualGearTypes] for details.  Also, most visual gears are not even using some of these values.
+
+Note that most visual gears require little to no modification of their values.
 
 Example 1:
 
 <code language="lua">  -- set a circle to position 1000,1000 pulsing from opacity 20 to 200 (8%-78%), radius of 50, 3px thickness, bright red.
     SetVisualGearValues(circleUid, 1000,1000, 20, 200, 0, 0, 100, 50, 3, 0xff0000ff)</code>
 
-Beginning from 0.9.21-dev, the 2nd to 11th arguments are optional. Any such argument which is declared as `nil` will not overwrite the corresponding value of the visual gear. With this change, it is not required anymore to call `GetVisualGearValues` beforehand.
+Only the first argument is required. Everything else is optional. Any such argument which is declared as `nil` will not overwrite the corresponding value of the visual gear.
 
 Example 2:
 
-<code language="lua">  -- set a circle to position 1000,1000
+<code language="lua">  -- set a visual gear to position 1000,1000
     SetVisualGearValues(circleUid, 1000, 1000)</code>
-<code language="lua">  -- set the color of a circle to bright red.
+<code language="lua">  -- set the tint of a visual gear to bright red.
     SetVisualGearValues(circleUid, nil, nil, nil, nil, nil, nil, nil, nil, nil, 0xff0000ff)</code>