World state

Light levels, game time, season, map change/patches, object removal.

Opcode	Name	Dir	Size	Description
0x1D	Delete Object	S → C	5 bytes (fixed)	The entity is gone — stop drawing it.
0x4E	Personal Light Level	S → C	6 bytes (fixed)	The light radiating around the given mobile.
0x4F	Overall Light Level	S → C	2 bytes (fixed)	0 is full daylight, higher is darker.
0x5B	Game Time	S → C	4 bytes (fixed)	The in-world clock shown to the client.
0xBC	Season Change	S → C	3 bytes (fixed)	Sets the client's season and optionally plays the season-change sound.
0xBF/0x08	Map Change	S → C	6 bytes (fixed)	Switches the client to the given map.
0xBF/0x18	Map Patches	S → C	41 bytes (fixed)	Declares the static/land map-diff block counts for the four classic facets.