Ligatures Part 1 – Standard

by Ilene Strizver

Ligatures
Colliding characters (upper) are corrected with ligatures (lower), which improve the fluidity and spacing of the “fi” and “fl” combinations. Set in Centaur.

Ligatures
You can easily view a font’s available standard ligatures via the Glyph palette. Use the drop-down menu to isolate them from the entire character complement, as shown in InDesign. Click to select them individually.
A ligature is a special character that combines two (or sometimes three) characters into a single character. A standard ligature is functional in nature, and is created to solve the problem of characters that crash when set next to each other.

The most common standard ligatures are the “f”-ligatures: “fi,” “fl” and sometimes “ff,” “ffi,” “ffl,” and occasionally more. These are created to prevent the unattractive collision that occurs in some typefaces between the hook and/or crossbar of the “f” and the dot or serif of the “i,” or the ascender of the “l” or second “f.”

Although the “fi” and “fl” ligatures are standard in Type 1 and TrueType® fonts, a broader range of standard ligatures are found in many of the new OpenType fonts. They can be accessed in either of two ways:

  • Individually, by clicking them in the Glyph palette. It’s easier if you access all the standard ligatures from the drop-down menu in the Glyph palette.
  • Turning them on and off globally. This can be done in Adobe® InDesign®, by accessing the drop-down panel in the Character palette, or in QuarkXPress®, by choosing Style > Character > OpenType. You can also access them with style sheets. Note that standard ligatures are turned on by default in most design programs.

Ligatures should be used with extreme care (or avoided entirely) if you plan to adjust the overall letterspacing of the text containing these combinations. Since a ligature is a single character, its internal spacing won’t change when you tighten or open up the letterspacing. In fact, when using extreme tracking, most design apps will replace ligatures at a certain tracking threshold with the original single characters to maintain consistent spacing.

Ligatures
Ligatures, as well as other attributes, can be turned on and off globally in QuarkXPress via the Character Attributes menu by choosing Style > Character.

Continue to part 2 of this article, on Discretionary Ligatures.

Editor’s Note: Ilene Strizver, founder of The Type Studio, is a typographic consultant, designer and writer specializing in all aspects of typographic communication. Read more about typography in her latest literary effort, Type Rules!, published by North Light Books. This article was commissioned and approved by Monotype Imaging Inc.