diff --git a/Newly-Identified-Fields.md b/Newly-Identified-Fields.md
index 14a57a6..88645ee 100644
--- a/Newly-Identified-Fields.md
+++ b/Newly-Identified-Fields.md
@@ -7,4 +7,8 @@ The following is a list of fields and addresses whose meaning has been identifie
 * Peep C4 has something to do with making peep go to locations. If set to 0 they all head to your first ride.
 
 * Ride variables:
-  * var_124 and var_126 keep track of customers per hour in some way. Possibly historical data?
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+  * var_124 and var_126 keep track of customers per hour in some way. Possibly historical data?
+
+dword_1358830 seems to store the upper boundary of the map? sub_68B93A checks whether coordinates ax and cx are on or off of the map and errors if they are.
+
+game flag 0x20h is a check for the tree height. 68b9b7 checks for this, and if so, rides can't be taller than 0x12 units, of something.
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