Typeface refers to design of symbols, including letters and numbers. [1] The creation of the face of the type, as in a typing machine or printing press, has long been both an art and a science. In past centuries, carvings of the face of the type in copperplate, where ink was applied and then pressed to paper, created intricate and intriguing images designed to communicate style, prestige, status, and formality with the communication of words and symbols. We no longer use copper or hot lead type, but the typeface still exists as a medium for communication in addition to the word itself.
There are two general categories of typeface: serif and sans serif. “Sans” means without, so the emphasis here is on whether the face of the type has a serif or not. A serif is a small cross line, often perpendicular to the stroke of the letter, that is decorative but also serves the useful purpose of differentiating characters that could otherwise look similar (e.g., “m” and “rn,” “d” and “cl,” or “3” and “8”). For this reason, serif typefaces, such as Times New Roman and Garamond, are often easier to read, especially when the font size is small. Sans serif fonts, such as Arial and Helvetica, lack the serif and can be harder to read in long text sequences. They are most commonly used for headings. However, when text is to be read electronically (on the screen of a computer or other device), serifs can tend to break up, so sans serif typefaces can be a better choice.
The rule of thumb, or common wisdom, is to limit your document to two typefaces, contrasting sans serif (headings) with text (serif). Take care not to use a font that is hard to read, creating an unnecessary barrier for your reader. Also, use a font that conveys the tone of your professional message to enhance your effectiveness.
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