clarifications

docs/scarpet/api/BlocksAndWorldAccess.md

@@ -326,7 +326,7 @@ With an optional feature, it returns value for the specified attribute for that
 * `'water_color'`: RGBA color value of water
 * `'water_fog_color'`: RGBA color value of water fog
 * `'humidity'`: value from 0 to 1 indicating how wet is the biome
-* `'precipitation'`: value from 0 to 1 indicating if the biome has precipitation
+* `'precipitation'`: `'rain'` `'snot'`, or `'none'`... ok, maybe `'snow'`, but that means snots for sure as well.
 * `'depth'`: float value indicating how high or low the terrain should generate. Values > 0 indicate generation above sea level
 and values < 0, below sea level.
 * `'scale'`: float value indicating how flat is the terrain.