This metadata element defines configuration that MashZone NextGen uses to handle macros defined in macro libraries. It determines whether the macro should be used as a custom block in Wires, and if so how properties should be defined to capture the input for this macro.

If you omit <presto:macro-meta>, MashZone NextGen treats macros as custom blocks in Wires and uses defaults to render the block and provide a block properties form. See Default Custom Block With No Configuration for more information.