Files with gks extension were associated with Graphical Kernel System graphic file format. No more often used.
GKS file extension - Graphical Kernel System fle
What is gks file? How to open gks files?
File type specification:
The gks file extension was used for a special Graphical Kernel System vector graphic file format. It was one of the first ISO standards for low level graphics systems introduced in 1977. Used mainly during 80s and 90s.
This gks 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.