wikipedia
Raglan sweater
A raglan sweater uses diagonal shaping lines from neckline to underarm.
What it is
Raglan construction often uses paired increases or decreases along four shaping lines. It is common in seamless top-down sweaters.
How Ruke patterns use it
Raglan shaping in Ruke patterns is closely tied to markers and paired increases. It is not only a sweater style, but also a reading skill: the knitter must track markers, increase rounds and stitch counts.
Examples
Yoga Summer Sweater states that it is worked from the top down with raglan shaping using M1L and M1R increases.
Raglan pages should link naturally to M1R, M1L, joining in the round, top-down sweater and gauge.
When to use it
Use it when a sweater is shaped with diagonal lines from neckline to underarm.
What to check
Check raglan increase placement, marker positions, yoke depth and whether left and right shaping are mirrored.