Paper grain refers to the direction in which the majority of the fibres in a piece of paper align.
It's an important consideration in printing as it can influence factors such as the paper's strength, flexibility, how it folds, and how ink adheres to it.
Usually, paper is either grain short (grain runs parallel to the paper's short side) or grain long (grain runs parallel to the paper's long side).
Understanding and properly accounting for paper grain can enhance the print outcome and longevity of printed materials.
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