4. A method of indexing a dictionary and an indexing system thereof according to claim 3 wherein said six symbols are designated as follows: symbol 1 including an upper short bar and a lower long bar for denoting the English vowel "A"; symbol 2 including three short bars for denoting the English vowel "E"; symbol 3 including one short bar for denoting the English vowel "I"; symbol 4 including an upper long bar and a lower short lower bar for denoting the English letter "O" symbol 5 including two short bars for denoting the English letter "U"; and symbol 6 including one long bar for denoting the second consonant letter of an entry in said upper indexing area but denoting the second vowel letter of an entry in said lower indexing area.
5. A method of indexing a dictionary and an indexing system thereof according to claim 4 wherein said symbols 1 through 5 are respectively labelled in said upper indexing area and located at a position horizontally corresponding to a letter marked on the fore edge similar to the third letter of a first or a last entry on either the left or right side of the labelled (page) leaf.