What is the definition of line uniformity?

Answer 1

Line uniformity is a phrase used to describe the quality of a sentence. In order to be considered line uniformity a sentence should state exactly what it wants readers to know and be of good quality.

Answer 2

Line uniformity can refer to a couple items. In writing, it refers to having sentence lengths that are roughly the same. In art, it can also refer to using consistent line thicknesses.