A pvl file extension is related to the Instalit and used for its library data.
PVL file extension - Instalit library data
What is pvl file? How to open pvl files?
File type specification:
The pvl file extension was used by some old installation program Instalit, which was developed for MS-DOS and early Windows operating systems.
The pvl file contains library data used by Instalit.
This pvl 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.