RECTANGULAR SELECTION in all Leopard text editors
Place cursor. Hold shift-option and move cursor to select a rectangle. Command-X. Relocate cursor to destination. Command-V.
Example: Move BBBB column between AAAA and CCCC.
AAAA CCCC This This goes goes on the on the left. right. BBBB DDDD This This goes doesn't in the go middle. anywhere.
Place cursor just before BBBB.
Hold shift-option and move to just before “anywhere”.
Relocate cursor to just before CCCC.
Note. This is not in a text editor.