What does "D.O. file" mean in an office context?

آفس کے تناظر میں "ڈی او فائل" کا کیا مطلب ہے؟

Department Order file

Direct Official file

Demi Official file

None of these

A D.O. file stands for Demi Official file, used for correspondence between senior officers.

It carries a personal touch but is still semi-formal and official in nature.