.RNC File Extension
File Type 1RNC ProPack Archive
What is an RNC file?
Compressed or "packed" file archive created with ProPack, a multi-format file packing utility; developed by Rob Northern Computing (RNC) and is now a freely distributed program.
File Type 2RELAX NG Compact Syntax File
.RNC File Association 2
Contains code written in RELAX NG, a schema language for XML; can be used to represent both XML schemas and instances using an abstract data model.