Notes about the CAS4 file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The CAS4 file type is primarily associated with 'Cascade DTP' by Price Media. Desktop publishing for browsers using CSS technology. (Ver. 4 files cannot be read by Ver. 3 of the program.)