Clipboard manager that doesn't attach to clipboard (windows)

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http://superuser.com – I'm looking for a clipboard manager for Windows that doesn't actually attach or listen to the clipboard. Basically, I want all the features of a clipboard manager like Ditto, but instead of automatically capturing everything I copy, I want to manually paste things to the manager for later use. The reasons I don't want it to capture everything I copy is for security, and so that it's easier to find the items I care about (because it only contains the items I specifically put there). Anyone know of such a program? (HowTos)