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NAPLPS is a protocol for transferring ASCII-based graphical information to
remote terminals via a communications channel (telephone systems, computer
networks, and so forth). It is specifically designed to provide usable
information transfer rates, even at data rates as low as 2400bps.

NAPLPS is used by many Videotext services, Prodigy, the commercial on-line
information service, and in standalone information kiosk systems. 

Although there is no NAPLPS file format, NAPLPS data streams are often saved
as files, and the files are then referred to as using the "NAPLPS file
format".

The NAPLPS specification is a standards documents available through ANSI, ISO,
or CSA. (See the CGM section for the addresses of these organizations). The
CSA document (T500-1983) also contains a supplement (1-1991) which is not
included in the ANSI version of this standard.  

Further information may be found in the February, March, April, and May 1983
issues of Byte Magazine. These articles explain much of the NAPLPS coding
system and discuss the potential for NAPLPS.

Michael Dillon has authored a paper on NAPLPS and started a NAPLPS section on
SIMTEL20, which may be access via the mirror site:

  ftp://oak.oakland.edu/pub/simtel/msdos/  

Michael Dillon may be contacted at:

  CompuServe: 71532,137
  Internet:   mpdillon@halcyon.halcyon.com
  BBS:        604.546.2705
  
The BBS also contains NAPLPS Shareware and art.