8. The invention set forth in claim 7 wherein said error number calculation is made using different criteria for each said presented character string portion.
9. The invention set forth in claim 8 wherein the criterion for calculating said error number for a first portion of each said identified character string is the number of mismatched characters between said directory character string and said presented character string, and wherein the criterion for calculating said error number for a second portion of each said identified character string is based on the number of characters that must be removed from one string to make it an abbreviation of the other.