I’ve opened a pull request which adds the read/write declarations and new macros to the three Meudon ID thorns in einsteininitialdata.

The pull request: https://bitbucket.org/einsteintoolkit/einsteininitialdata/pull-requests/15/scupp-meudonpresync

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2643/adding-read-write-declarations-to-meudon