This property, which can appear only within a @page at-rule (see Section A.1) specifies whether crop marks, page alignment crosses, or both should appear on the printed page.
Either the none constant, or crop, cross, or both (separated by a space).
Initial value: none
CSS Version: 2
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This at-rule specifies that pages should be printed with crop marks (to indicated where the page should be cut) and crosses (to help in the alignment of pages):
@page { marks: crop cross; }
3.133.141.6