Files with cr3 extension can be found as regist files created using Casio WK-1800 Keyboard.
CR3 file extension - Casio WK-1800 Keyboard registration data
What is cr3 file? How to open cr3 files?
File type specification:
The cr3 file extension is mainly related to an registration format recorded using the Casio WK-1800 Keyboard.
It was a type of 76-key portable keyboard with Floppy Disk Drive for song play and storage released around 2003.
These cr3 files contain registration data, 20 setups (5 setups x 4 banks)
This cr3 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.
