Mystcraft code diving spoilers

No seriously, spoilers.
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Mystcraft version 0.8.1-Forge-3.1.2.94

These are only some the symbols I've discovered in my world, there are more.
Biome controllers:
-Single biome
-Checkerboard biomes
-Normal biome distribution

Terrain generators ("Terrain Formation"):
-Standard Terrain
-Flat
-Cave World (nether lookalike)

Brightness ("Light Levels"):
-Standard Lighting

Sunset Colors:
-Normal Sunset Colors

Time:
-Eternal Day
-Eternal Dusk
-Normal Time
-Slow Time

~~~~~penalties for missing symbols
+10 - not enough biomes
+10 - biome controller
+10 - terrain generator
+10 - brightness
+10 - sunrise/sunset color
+30 - time

~~~~~penalties for having more than one... (or "conflicts")
   (only the last of each type counts in generation)
*+5 - cloud height
*+5 - horizon
+100 - biome controller
+100 - too many biomes**
+20 - terrain generator
+20 - brightness
+20 - sunset
+50 - time
*+20 - weather


*stubs - not implemented yet, so I don't expect to get more than one of them.

**possibly exactly the right number of biomes? The code is roughly
[code]if(!(BiomeSymbolCount < BiomeController.getMaxBiomes))
instability += 100[/code]

~~~~~automatic symbol penalties
+50 - Heavy Resources
Yes, that's the only one in the code.


~~~~~Allowed number of biomes for each controller
1 biome: biomes allowed: 1
Checkerboard: biomes allowed: 2
Normal dist: biomes allowed: 3 < N <= 1000


~~~~~
Because I'm not sure what the deal with the maxbiomes penalty code is, I've been using 3 or 4 of the same biome and 'normal biome distribution' instead of the 'single biome' controller.

Add up the total score by looking for conflicting symbols or improper numbers of biomes, add 50 for each 'Heavy Resources' symbol, and add 70 if you hopped into the age without writing anything yourself. Divide your score by 10 and you have the percent chance that a decay block will be generated in that age.

Example uncorrupted (as far as I can tell) age:
Normal Biome Distribution
Plains
Plains
Plains
Plains
Standard Lighting
Normal Sunset Colors
Lakes (Terrain Features)
Flat
Caves (Terrain Modifiers)
Eternal Day

When I went to the age, I immediately left to see what other symbols, if any were added:
Red Fog

Then I looked around for a good long while (20 mins) and didn't see any evidence of decay.