Typing: In the present times, commercial correspondence, generally does not take place in the form of hand written letters. These letters are generally drafted on computers and printed. Normally hand-written letters have remained limited writing to personal letters. For computer typed letter, fonts of different types and sizes are available. Simple fonts with least cursive variations increase legibility and therefore, they are generally used for commercial correspondence. Proper care in typing provides elengance and brilliance to the write up and letter both. In addition to that line spacing adds attractive look to the letter. The commonly prefered line spacing is 1.0, 1.15 or 1.5. While taking print from the computer printer, the font should not be light for that proper care should be taken.