%ftp ftp.ora.com ftp>binary ftp>get viola940323.tar.gz (Or whatever the latest release is)
Viola is currently only for the Unix/X-Windows operating system environments. The Motif toolkit is optional (there is a Motif based front-end in addition to the pure XLib based front-end).
The viola architecture is fairly OS neutral, but certain system commands and examples are UNIX/X specific.