[NTG-context] Official file ending?

Hi! Most text editors have LaTeX specific syntax highlighting, so it makes sense to give your ConTeXt file a ending it can be distinguished with. Is there a blessed one? - .ctx: Would mirror the semi-common .ltx, but is used for XML files inside of ConTeXt itself - .mkiv: Is that just for ConTeXt or all LuaTeX stuff? Would it make sense to give text documents that extension? - Something else? (.tex doesn’t count, it’s shared with LaTeX files and plain TeX files) Best, Philipp