Values are changed (e.g., to adjust the width of Japanese font characters) and then written back into the emulator's active RAM.

: You can inspect the raw data or metadata of such archives using the WinRAR GUI "Info" page or forensic tools like ugrep --filter to search inside the compressed entity. Need to open, create, or convert a RAR file? - WinZip

If your inquiry refers to a different mem.rar , the following technical characteristics apply to any file of this type: