12. The device according to claim 5 or 6, wherein the memory means contains the first word or words in an abbreviated form wherein a part of characters of the first word or words is altered by a symbol different from any alphabetical character.
12. The device according to claim 5 or 6, wherein the memory means contains the first word or words in an abbreviated form wherein a part of characters of the first word or words is altered by a symbol different from any alphabetical character. 13. The device according to claim 12, wherein the part to be altered is the top of the characters of the first word or words.