^
w
+
e
v

'add_item' room telling about simple items
'add_item' room telling about simple items with many names
#3, verbs
#4, many verbs
no #5
#5b, item descriptions that change with time
'add_item' room telling about making verbs do stuff
#7, verb failure messages
#8, verb success messages
#9, verb patterns
'add_item' room telling about the arguments of the function
'add_item' room telling about getting integer arguments
'add_item' room telling about getting string arguments
'add_item' room telling about getting the object as argument
'add_item' room telling about resolving item conflicts

