magicnum – Access TeX systems' "magic numbers"

This pack­age al­lows ac­cess to the var­i­ous pa­ram­e­ter val­ues in TeX (cat­code val­ues), e-TeX (group, if and node types, and in­ter­ac­tion mode), and LuaTeX (pdflit­eral mode) by a hi­er­ar­chi­cal name sys­tem.