Files with ohi file extension might be found as part of old OpenHelp program from Borland.
OHI file extension - Openhelp data
What is ohi file? How to open ohi files?
File type specification:
The OHI file extension is related to old and now discontinued product called OpenHelp that was originally developed by Borland Software Corporation.
The ohi file contains ASCII text data used by Openhelp.
This ohi 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.