PRC

What is PRC format? Read PRC files by any software?

PRC is a text format that is still quite unknown to many people. Therefore, how to open PRC file? Or watching PRC files by any software is something that not many people know about.

What is CHM format? Read CHM files by any software?

CHM is a very special text format so many people don't know what is CHM file? How to view CHM text?