Function isCharacterMarker

True when a marker is a character-level marker — one that labels a span of text between an opening and a closing marker (e.g. \nd …\nd*) rather than beginning a block of text.

Character markers are identified by their MarkerType.Character type in usfmMarkers rather than a hand-maintained list. The chapter and verse numbering markers v, va, vp, and ca are also typed MarkerType.Character even though they are structure markers, so they are excluded by their DivisionMarks category — they are the only MarkerType.Character markers in that category, and the category is the only thing that separates them, since va, vp, and ca each have hasEndMarker: true like every genuine character marker.

Note that the note and cross-reference content markers (e.g. ft, xo, xt) are genuine character markers and return true; only the note markers that contain them (f, fe, x) are MarkerType.Note. A caller that wants only body-text styling markers must filter further.