If you were logged in you would gain 3 XP for posting a reply.
You need to be in terrain view. Make sure nothing is selected. Draw a box around what you wish to copy. Press Ctrl-C to copy, as per a word processor, then press Ctrl-V to paste. At this point you can manipulate the terrain, ie, clock wise, flipped and so on. Look under the edit tab.
As for resizing, making something smaller or larger, I have not seen such a function.
Support Nibbits by linking to us:
Managed by WM Innovations
More from Nibbits: WarCraft 3 Maps | StarCraft Maps | StarCraft 2 Maps | Gamer Configs