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As in the case of the copy command, you can move several resources at once. Select the resources in the Working Copy view and choose the Move to action from the contextual menu. The move command actually behaves as if a copy followed by a delete command were issued. You will find the moved resources at the desired destination and also at their original location, but marked as deleted.
Note: External items cannot be moved using the Move to action, because they cannot be deleted. Instead, you should edit the svn:externals property defining the external item and use the Update operation on the item's parent folder for the change to take effect.
Attention: For SVN 1.8 working copies: when committing items that were moved and/or renamed, make sure you select both the source and the destination. Otherwise, the commit operation will fail.