Only in The aom titans campaign maps
You open the wc3 folder and hit campaign editor.
There in the Campaign tabs for every race; to place them on the terrain/map Open unit pallet (window>new pallet<units) click the option pane that currently says Melee, and switch it to campaign the boats are in the units section
You have to get Hercules to open it.
Use Hex Editor.
Start > Run > Registry Editor > Windows XP
right click your wc3 icon and click open file location then in that folder that opens find world editor and open it, world editor doesnt have anything to do with clans
Open it with a text-editor.
Any text editor will do. In practice, you would usually use an IDE, which includes an editor.
I'm sorry to tell you this, but there is no object editor in the 3ds version.
Sam went on a campaign for keeping the town library open.
Go into Doom 3, open the console by pressing CTRL/ALT/` at the same time. When it is open, type "editor" and you will go to the editor tab.
Maybe, just try it