The cp command, UglierTroll, and KidnappedChild...

[Ayelis]

So I was trying to interpret what this second troll wanted me to do. I thought maybe he wanted to live free from the influence of his brethren so I decided to try and extricate him from the cave, and ended up making something even worse. A bug!
Steps to reproduce:

He looks mad, and really, really ugly. But he wants to tell you something. Between his garbled grunts, 
you manage to understand the following: You can cast spells on items that you don't currently see. For 
example, if you want to copy an item from this room to the OminousLookingPath from which you came, you 
can cp [ITEM_TO_COPY] ../[NEW_ITEM_NAME]. You can do this for most spells and most rooms. Use this 
knowledge wisely. Remember.... you can't undo an 'rm' spell. 
>cp UglierTroll ../UglierTroll
Just copied UglierTroll into ../UglierTroll.
>ls
 Locations: 
Cage
Slide
 Items: 
UglyTroll
UglierTroll
AbsolutelyHideousTroll
../UglierTroll
>less ../UglierTroll
There is no undefined here.

Regardless, I don't think that's supposed to happen. From other bug reports and the PDF walkthrough I see that I was supposed to copy someone else (though wouldn't a mv command be better? We don't just want to copy sentient beings while the originals are destroyed.) He should probably tell us the 'mv' command is the one we want. In fact, I'm not even sure how any of these commands are supposed to work (they don't!), or how the PDF or the UglierTroll's instructions are in any way accurate. Here are my results. If anyone else has better success with any of these, LMK! This broken functionality is present in the online version on MIT's site and in mprat's site.

>less Cage/KidnappedChild
There is no undefined here.
>mv Cage/KidnappedChild ..
Must be a valid item and location to move it.
>mv Cage/KidnappedChild
You need to move thing A to place B. Use mov [thingA] [placeB].
>mv Cage/KidnappedChild ../
Must be a valid item and location to move it.
>mv Cage/KidnappedChild ../Child
Must be a valid item and location to move it.
>mv Cage/KidnappedChild ../Slide
Must be a valid item and location to move it.
>cp Cage/KidnappedChild ..
No item of that name to copy.
>cp Cage/KidnappedChild ../Slide
No item of that name to copy.

Not a game breaking bug since the Slide is still accessible but quite annoying that none of this works. And "No item of that name" is funny because I used Tab Completion so there's quite certainly an item of that name! I'll call it Severity: High though since this entire room is broken and useless and should probably just be deleted. ;) [I actually crashed my game trying to access "../troll2" in the current directory after I made a copy. Beware!]