Articulations on notes under one beam should read at a visually consistent height across the group, not fluctuate per notehead

When several beamed notes each carry the same articulation (e.g. a run of staccato eighth notes), the marks are conventionally kept at a roughly even distance from the beam/staff across the group — engravers avoid a staircase of wildly different offsets even though each note's raw stem-height differs, because the beam itself (not each individual notehead) is what the eye reads the marks against.

A four-note ascending beamed run, each note with a staccato dot, renders the dots at increasing height above the beam purely because VexFlow's per-note `stemHeight` term (articulation.ts line 227) grows with each note's own stem length, producing a visibly uneven row of dots instead of a level one.

Gould, Behind Bars, ch. 'Articulation' — general discussion of beamed-group consistency; Ross, The Art of Music Engraving on avoiding a 'staircase' of individually-optimal but collectively uneven marks (the same aesthetic principle vs-displacement-vs-respacing-decision applies to horizontal spacing, mirrored here on the vertical axis).

This rule is about where marks land on the page, so it can only be judged after engraving. Collision and spacing faults live here.