Haven't read the document yet, so I don't know if there's a rationale for naming. It might simply be racial memory, from the days of linkers with eight charact

Haven't read the document yet, so I don't know if there's a rationale for naming. It might simply be racial memory, from the days of linkers with eight character symbols (and the initial underscore ate one of them). It's hard to believe we actually wrote software under those limitations.