NAPLPS
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== Links == | == Links == | ||
* [[Wikipedia:NAPLPS|Wikipedia article]] | * [[Wikipedia:NAPLPS|Wikipedia article]] | ||
+ | * {{EGFF|naplps|NAPLPS File Format Summary}}, from the [[Encyclopedia of Graphics File Formats]] | ||
* [http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/bs14.pdf/$FILE/bs14.pdf Television Broadcast Videotex (from Canada)] | * [http://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/bs14.pdf/$FILE/bs14.pdf Television Broadcast Videotex (from Canada)] |
Revision as of 00:55, 8 October 2014
NAPLPS (North American Presentation Level Protocol Syntax) is a system for expressing graphics in terms of character-based commands which was developed beginning in the 1970s for use in videotex / teletext systems, and was used as late as the 1990s in the Prodigy service and on some bulletin board systems. It can be used with 7-bit ASCII (characters #0-#127 decimal), but "extended" versions also exist which define meanings for 8-bit characters outside the 7-bit range (#128-#255 decimal). It uses a variety of characters with both standard ASCII meanings and specific NAPLPS meanings, as well as multi-character escape sequences, for defining various text and graphical screen layouts in a manner that is platform-independent and capable of efficient transmission (e.g., via telephone modem, or between the frames of TV broadcast signals).
Contents |
Specifications
Software
Sample files
- NALPANML.ZIP
- NAPFNTA.ZIP
- NAPLPS.ZIP → *.NAP