9. Apparatus for automated linguistic expression substitution having a keyboard for accepting expressions and converting them into signals representative thereof, a monitor for graphic display of signals representative of symbols and linguistic expressions, a processing unit for processing signals representative of lingiuistic expressions, and a storage unit for storing signals representative of linguistic expressions, and further having the improvement comprising A. first input means for inputting from at least one of said keyboard, said processing unit, and said storge unit, a suspect expression signal representative of a linguistic expression, B. second input means for inputting, from at least one of said processing unit or said storage unit, alternate expression signals representative of one or more permissible linguistic expressions, C. comparison means, connected to said first and second input means, for comparing said suspect expression signal with each said alternate expression signal and for producing a disparity signal numerically representative of differences between a spelling of the linguistic expression represented by said suspect expression signal and a spelling of the linguistic expression represented by each said alternate expression signal, said comparison means including means for detecting disparity types representative of (i) transposition of character order, (ii) deletion of a character, (iii) an unmatched character, and (iv) differences in expression character length, occurring between said compared expression signals, and further includes means responsive to the detection of said disparity type for producing a signal indicative of the numerically-weighted structural significance of that type, and D. selection means, connected to said comparison means and responsive to a numerical value represented by said disparity signals, for selecting the alternate expression signal, if any, to replace said suspect expression and for producing an output signal indicative thereof.
9. Apparatus for automated linguistic expression substitution having a keyboard for accepting expressions and converting them into signals representative thereof, a monitor for graphic display of signals representative of symbols and linguistic expressions, a processing unit for processing signals representative of lingiuistic expressions, and a storage unit for storing signals representative of linguistic expressions, and further having the improvement comprising A. first input means for inputting from at least one of said keyboard, said processing unit, and said storge unit, a suspect expression signal representative of a linguistic expression, B. second input means for inputting, from at least one of said processing unit or said storage unit, alternate expression signals representative of one or more permissible linguistic expressions, C. comparison means, connected to said first and second input means, for comparing said suspect expression signal with each said alternate expression signal and for producing a disparity signal numerically representative of differences between a spelling of the linguistic expression represented by said suspect expression signal and a spelling of the linguistic expression represented by each said alternate expression signal, said comparison means including means for detecting disparity types representative of (i) transposition of character order, (ii) deletion of a character, (iii) an unmatched character, and (iv) differences in expression character length, occurring between said compared expression signals, and further includes means responsive to the detection of said disparity type for producing a signal indicative of the numerically-weighted structural significance of that type, and D. selection means, connected to said comparison means and responsive to a numerical value represented by said disparity signals, for selecting the alternate expression signal, if any, to replace said suspect expression and for producing an output signal indicative thereof. 12. Apparatus according to claim 9, having the further improvement whereby the comparison means includes means for detecting a disparity type representative of deletion of characters, with respect to said alternate expression signal, from said suspect expression signal.