-Run "./roguelike -s" to watch a recording of the current game from the
-beginning. Hit the "next turn / wait" key to increment turns. Keys to
-manage windows, scroll on the map and quit the program are active; keys
-to perform player actions are inactive. Append a number to the -s option
-(like "-s100") to start the recording at the respective turn number.
+Once you start a new world, every move of yours is recorded in a file called
+"record_save". It gets overwritten when a new game world is started after
+deletion of the "save" file. Run "./roguelike -s" to watch the current game's
+recording from the beginning. Hit any player action key to increment turns (they
+will not trigger the actions usually mapped to them, only repeat theactions
+done at that point in the game as defined in the "record_save" file). Keys to
+manage windows, scroll on the map and quit the program do their usual thing.
+Append a number to the -s option (like "-s100") to start the recording at the
+respective turn number.
+
+Hacking / server internals and configuration
+--------------------------------------------
+
+The game world is set up and made subject to player commands by
+./roguelike-server. It's controlled by commands explained in the file
+./SERVER_COMMANDS. The server usually reads these from the files ./server/in
+(written to by ./roguelike-client), ./confserver/world, ./record_save and
+./save.
+
+All source files are thoroughly documented to explain more details of
+plomrogue's internals. The ./roguelike-server executable can be run with a -v
+option for helpful debugging info (mostly: what messages the client sends to the
+server). Server and client communicate via files in the ./server/ directory
+(generated when the server is first run). The ./server/in file is read by the
+server for newline-delimited commands. The ./server/out file contains server
+messages to be read by clients. The ./server/worldstate file contains a
+serialized representation of the game world's data as it is to be visible to
+the player / the player's client.