The online guide to print and design.
1. A straight line used as a graphic element.
2. The thickness of the line is measured in points.
3. A continuous line, thick or thin, that is used in decorative printing.
In the 1800s and early 1900s, title pages were often enclosed in plain rule-borders.
The term can also apply to a decorative line on a binding, which may be in blind or gilt.
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