About composition methods
Photoshop and ImageReady offer two composition methods: the Adobe Every-line Composer and the Adobe Single-line Composer. Both composition methods evaluate possible breaks and choose the one that best supports the hyphenation and justification options you've specified for a given paragraph. The 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. Working with multiple lines of type results in more even spacing and fewer hyphens. The Every-line composer approaches composition by identifying possible breakpoints, evaluating them, and assigning a weighted penalty based on these principles: The 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: |