In Arabic there are letters that look the same and can only be known by the number and placement of NUKAAT (dots). eg. , compare with the English letters b, d, p, q, where the position of the 'tail' changes the letter.

As Arabic alphabet contains many dots (nukaat), it is recommended that one becomes familiar with the number and position of dots. The dots differentiate the letters.

It should be noted that in Arabic Alphabet three dots never occurs under the letter.