Notes about the RXH 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 RXH file type is primarily associated with 'Reflex' by Borland Software Corporation. Reflex is an old DOS flat-file database system. The size of the database was limited to the amount of system memory.