.OR4 File Extension
File TypeIBM Lotus Organizer 97 GS File
What is an OR4 file?
Organizer file created with Lotus Organizer, a personal information manager (PIM) software program; includes a contact list, calendar, to-do list, call record, and other information.
Lotus Organizer 97 GS was included as part of IBM Lotus SmartSuite 97 GS.