Files with MDI extension might also be found as multiple document interface files from Borland programs.
There are 2 other file types using
the MDI file extension!
.mdi - Microsoft Office Document Imaging file format [common]
.mdi - MIDI sound file
MDI file extension - Borland multiple document interface
What is mdi file? How to open mdi files?
The MDI file extension is also related to a multiple document interface file type used by Borland application. No further information could be found about the use of this file format. Might be old and no longer used.
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