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A DATA TYPE field with a value of MUMPS is available to those with Programmer access. The input to this field is executable M code. Each field of this type is stored on its own Global node using the extract format (Em,n).
When a MUMPS field type is created, it is automatically given a WRITE protection of @. Unless this is modified, only those with Programmer access can enter data into a MUMPS field type.
Developers are allowed to change the data type of MUMPS to, for example, FREE TEXT. However, the values are still stored in extract format on the subscripted node.
Reviewed/Updated: May 2026