On the other hand, all, typical markings one would expect to use when writing - !@#%?.,;:()[] +=were not used because they are also used in Arabic text. Thus, if the English IBM did appear in English, in the Arabic text it was in the original concept supposed be marked by putting double quotes around it ""IBM"". This mechanism allows for automatic language processing to take place leaving non-Arabic text as is, unprocessed when it sees the double quotes. Originally, even < > & were not used either especially < > which are French borrowed quote marks because they are occasionally used in Arabic text. These were added later as a necessity. Their XML safe versions keep with the mnemonic device devised (and discussed below) in that I O W correspond (if imprecisely) to each of the sounds made.