About composition methods
Illustrator offers two composition methods: the Adobe Every-line Composer and the Adobe Single-line Composer. Both methods evaluate possible breaks and choose the one that best supports the hyphenation and justification options you've specified for a given paragraph. Every-line Composer Considers a network of break points for a range of lines and thus can optimize earlier lines in the paragraph in order to eliminate especially unattractive breaks later on. The Every-line composer approaches composition by identifying possible break points, evaluating them, and assigning a weighted penalty based on the following principles: Single-line Composer Offers a traditional approach to composing type one line at a time. This option is useful if you prefer to have manual control over how lines break. The Single-line composer uses the following principles when considering a breakpoint: |