1. A system for displaying text in Braille code, said text having characters with video attributes and being formatted for a visual presentation in which the characters have a predetermined relative spatial relationship with each other, said system comprising: A. a digital data processor for storing and processing said text; B. A Braille display terminal having an electro-mechanical Braille display cell for displaying Braille code; C. cursor control means for selectively identifying a position in said text and the character located at said position, including attributes of said character; D. first control means for hierarchically ordering a description of the identified character into a plurality of frames of information, said plurality of frames including a top frame and a bottom frame, wherein said top frame appears on the Braille display cell when said character is caused to be displayed on said display cell; and E. frame selection means for causing a successive frame of said plurality of frames t be displayed on said Braille display cell whereby said successive frame replaces the frame previously displayed on said display cell, whereby a substantially complete description of any character of text and its associated attributes can be displayed on a said Braille display cell by using said cursor control means to identify the position in text and then using said frame selection means to individually display the plurality of levels of information and whereby the formatting and relative spatial relationship of the characters in the displayed text are substantially preserved.
2. The system as defined in claim 1 wherein the top frame comprises a 4.times.2 dot-position array.