Shut down server.
THINGS_HERE [0 to 255] [0 to 255]
-Write line-by-line list of items at y position of first argument, x position of
-second argument into ./server/out file, enclosed by two lines "THINGS_HERE START"
-and "THINGS_HERE END".
+If world exists, write line-by-line list of things in memory at y position of
+first argument, x position of second argument of map into ./server/out file,
+enclosed by two lines "THINGS_HERE START" and "THINGS_HERE END".
Player commands
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