A joc file extension is related to the Context4 word processing tool.
JOC file extension - Context4 data
What is joc file? How to open joc files?
File type specification:
The joc file extension is associated with the Context4, a word processor for MS-DOS operating system.
The joc file stores various data used for internal purposes of the Context4.
The Context4 seems to be obsolete product.
This joc 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.