A wpj file extension is related to the Watcom C/C++ software. A wpj file contains project.
There is one other file type using
the WPJ file extension!
.wpj - Microsoft Works wizard data
WPJ file extension - Watcom C/C++ project
What is wpj file? How to open wpj files?
File type specification:
The wpj file extension is associated with the discontinued Watcom C/C++, a compiler for C/C++ and Fortran, available for various platforms, developed by Watcom International Corporation.
The wpj file stores project from Watcom compiler.
This wpj 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.