PPMN_ — Section 6.2 Typographical and Linguistic Conventions and Style are not consistently implemented in the document

Section 6.2 in bmi/22-09-01 (PPMN), section 6.2 in dtc/22-01-04 (SCE), and section 6.1.1 in formal/2011-01-03 (BPMN) show identical typographical conventions about references to graphical, non-graphical elements, and references to attributes or model associations. However, it appears that PPMN and SCE do not implement these conventions properly, certainly not in the manner observed in BPMN.