The term "virtual" might make it possible to cover and compare a range of media--verbal, visual, even statistical--without bundling them all into the medialess
category of writing or textuality.
For example, the advent of network computers, or medialess
PCs, represents an opportunity to replace eclectic desktop populations with low-cost standard (Web-enabled) technology--that also happens to be Y2K compliant.
The Internet protocols are Transmission Control Protocol (TCP), File Transfer Protocol (FTP), optional support of NFS to enable low-cost, medialess
devices while allowing for persistent storage in the network and SMTP, a protocol enabling distributed management of devices.