Hi
In the MARC::Field module, a field is considered a control field only if its tag is numeric and below 010. In the "Aleph" library system, the tag FMT is also a control field. In order to prevent errors, I use a private copy of MARC::Field that also considers FMT a control field. Perhaps you could make this change in the module also, as it would help those with "Aleph" libraries. Thank you, Rina Ron
