Some modules I wrote in or ported to Niklaus Wirth's Oberon-07 programming language.
If a module is dependent on imports that are unique to Project Oberon 2013 ('Oberon V5') then I indicated this by a context comment after the module name (* IN V5 *); if it also works on earlier versions of Oberon System then I use the context comment (* IN Oberon *).
D.E. Evans' A resource for the Oberon-07 language