We have, as part of still used legacy code, a C++ application, written in 2009, that uses some customer-provided files, like application.h, application.tlb, and application_i.c.
The application has been written by my predecessor, who’s no longer available.

We have, as part of still used legacy code, a C++ application, written in 2009, that uses some customer-provided files, like application.h, application.tlb, and application_i.c.
The application has been written by my predecessor, who’s no longer available.