PageItemBase
Defined in: src/layout/page-doc.ts:173
The fields every PageItem shares (ir-design §6, frozen at stage 6.4):
the positioned, layout-output vocabulary a page is made of. Page-frame
geometry is branded Pt (PostScript points) with a TOP-LEFT origin, y growing
downward (like CSS/SVG); the PDF emitter converts into PDF’s native y-up frame
at emission. Offsets measured from a text baseline (math/inline-image boxes
inside a Line) and styling magnitudes (font/stroke sizes) stay plain
numbers — they are not page-frame coordinates.
Extended by
Section titled “Extended by”Properties
Section titled “Properties”artifact?
Section titled “artifact?”
readonlyoptionalartifact?:"pagination"
Defined in: src/layout/page-doc.ts:185
Tagged PDF: explicitly mark this item as a pagination artifact (running
header/footer, §14.8.2.2.2). Distinguishes header/footer text from
not-yet-tagged body content so it is typed /Artifact /Pagination, never a P.
structId?
Section titled “structId?”
readonlyoptionalstructId?:number
Defined in: src/layout/page-doc.ts:179
Tagged PDF (§14.8): the logical structure node this item’s content belongs to. Set only on body content in tagged mode; undefined text in the line pass is treated as an artifact. Ignored when not tagging.