5. A computer-implemented method for use with a document tangibly stored in a first computer-readable medium, the method comprising: (A) accessing the first computer-readable medium to identify a first phrase within the document, the first phrase representing a first written form of a concept; (B) determining whether a plurality of text keys tangibly stored in a second computer-readable medium includes a matching text key having at least a predetermined degree of similarity to the first phrase; and (C) if the plurality of text keys is determined to include the matching text key, then: (i) accessing the second computer-readable medium to identify a text value associated with the text key; and (ii) replacing the first phrase with the text value in the document on the first computer-readable medium; (D) after (C), replacing the text value with the matching first phrase in the document on the first computer-readable medium; and (E) before (B), receiving an instruction from a user to modify the first phrase; wherein (B) and (C) are performed in response to receipt of the instruction; and wherein the instruction does not include the text value.
5. A computer-implemented method for use with a document tangibly stored in a first computer-readable medium, the method comprising: (A) accessing the first computer-readable medium to identify a first phrase within the document, the first phrase representing a first written form of a concept; (B) determining whether a plurality of text keys tangibly stored in a second computer-readable medium includes a matching text key having at least a predetermined degree of similarity to the first phrase; and (C) if the plurality of text keys is determined to include the matching text key, then: (i) accessing the second computer-readable medium to identify a text value associated with the text key; and (ii) replacing the first phrase with the text value in the document on the first computer-readable medium; (D) after (C), replacing the text value with the matching first phrase in the document on the first computer-readable medium; and (E) before (B), receiving an instruction from a user to modify the first phrase; wherein (B) and (C) are performed in response to receipt of the instruction; and wherein the instruction does not include the text value. 6. The method of claim 5 , wherein the instruction comprises an instruction generated by the user using a single keystroke.