6. The method defined in claim 1, further comprising the additional step of identifying, in sequence, at least one alphanumeric character selected by a user, and wherein step (b) includes the step of displaying on said first section of said screen a plurality of said linguistic expressions which begin with said at least one alphanumeric character identified in said additional step in the character sequence selected by the user.
8. The method defined in claim 6, wherein some of said linguistic expressions each comprise an alphanumeric character and wherein said at least one alphanumeric character is selected by a user by identifying its position on said first section of said screen with said position selecting means.