A big file extension is related to the Chinese BIG5 (Big-5) format used to encode traditional Chinese characters.
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.BIG file extension - Chinese text
What is big file? How to open big files?
File type specification:
The big file extension is associated with the Chinese BIG5 (Big-5) format used to encode traditional Chinese characters to text files. It is used in Taiwan, Hong Kong, and Macau.
The big file contains text encoded in BIG-5 format.
This big 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.
