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### Reading Metadata from Special Sources

In the similar way like the dynamic metadata mentioned in the previous section, another metadata definitions can also be used in the Source tab of the Graph Editor pane.

Remember that neither these metadata can be edited in CloverETL Designer.

In addition to the simplest form that defines external (shared) metadata (`fileURL="${META_DIR}/metadatafile.fmt"`) in the source code of the graph, you can use more complicated URLs which also define paths to other external (shared) metadata in the Source tab.

For example:

    <Metadata fileURL="zip:(${META_DIR}/delimited.zip)#delimited/employees.fmt"
    id="Metadata0"/>

or:

    <Metadata fileURL="ftp://guest:guest@localhost:21/employees.fmt"
    id="Metadata0"/>

Such expressions can specify the sources from which the external (shared) metadata should be loaded and linked to the graph.

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