Common player commands:
---------------
look, l
inventory, i
help
score
status
who
tell		(example: "tell mike where are you?")
say, '		(example: "' hi", "say nice to meet you!)

Common object commands:
-----------------------
look at, look in (example: "l in treasure chest")
examine, exa
get, drop	(example: "get bag", "get all from box")
open, close 	(example: "open door", "open glass case")
read 		(example: "read writing on cap")
put		(example: "put red ball in my first bag")

Common Movement commands:
-------------------------
n,s,e,w,u,d
go north, go south, go east, go west, go up, go down
out, go out
crawl (example: "crawl south", "crawl into passageway" )
climb		(example: "climb tree")
enter		(example: "enter crawlspace")

Vendor commands:
----------------
money
appraise
price
show
buy, sell