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Logically, keys for a specific backend are organized within global and environment directory trees below that backend's root directory. You can visualize this tree as a filesystem in which a leaf node is a file named for the key and whose contents contains the value for that key. For example,
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To facilitate implementations of this tree, key and folder names are restricted to sequences of alphanumeric, ‘.', ‘_', and ‘-’ characters, with '/' used as the path separator. Furthermore, when specifying the path to a key, the path cannot contain relative path subsequences (e.g., '/./' or '/../').
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