From the mechanical standpoint, there are five parts to a letter: superscription, body of the letter, signature, enclosures and envelope. In each of these five parts there are opportunities for original touches that make letters more than mere circulars.

The superscription and the way it is inserted in a form letter is the most important feature in making it personal. No semblance of a regularly dictated letter can be given unless the date, name and address are filled in, and if this is not done carefully it is far better to open your letter with "Dear Sir," and thus acknowledge that it is a circular.

To the left, and in exact alignment with the paragraphs in the body of the letter, should appear the name and address of the reader. If this superscription appears a fraction of an inch to either side of the margin the fill-in is evident. The style of type and the shade of the typewriter ribbons used in filling-in must match with absolute accuracy. This is vital and yet the most common error in form letters is imperfect alignment and conspicuously different colors of ink.

To secure an exact match between the filled-in name and address and the body of the letter, it is necessary to use ink on the duplicating machine which matches your typewriter ribbon. The ink used on the duplicating machine can be mixed to correspond with the color of the ribbons. Long experience has shown that violet or purple shades of ink are best for form letters, for these colors are the easiest to duplicate. Black and blue are very difficult to handle because of the great variety of undertones which are put into these inks.

Duplicating machines which print through a ribbon give variable shades and the typist in filling in must watch carefully to see that her typewriter ribbons match the impressions made in the body of the letter, especially where the form letters are printed several months in advance and exposed to changing conditions.

In departments where the stenographers fill in only a few letters a day, a piece of a "fill-in" ribbon is attached to the end of the regular ribbon and used for this purpose.

For speed and better work, typists who do nothing but fill in form letters, overlay their work—that is, before one sheet is taken out of the machine another is started in. A scheme which is slower but gives accuracy, is to work backward on the name and address, writing the "Gentlemen" or "Dear Madam" first, beginning flush with the margin. The town or city is next written, beginning on the paragraph or established margin line and then the name and the date are filled in. Guides may be secured so that all sheets will be fed into the machine at one place, thus assuring an exact margin.

Too much emphasis cannot be laid on the necessity of doing this fill-in work carefully, or not at all. If letters are printed by means of some duplicating machine which prints through a ribbon, care must be taken that the first run from the fresh ribbon is filled in on the typewriter with an equally fresh typewriter ribbon. Later when the machine ribbon is worn, giving a lighter impression, an older ribbon is used on the typewriters.

This fill-in work is difficult, and even when done properly many firms adopt all kinds of little schemes to help out the personal appearance. Separating the superscription from the body of the letter so that the immediate contrast is not so great, accomplishes this purpose.

One familiar scheme is to print the shipping or sales terms of the company across the letterhead so that the first paragraph comes beneath the printed matter and the filled-in superscription above. Then if there is a slight difference in shades of ink it is not so apparent. The same care must, however, be taken with the alignment.