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Pack prolog_library_collection -- prolog/os_ext.pl
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Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 exists_program(Arg1)
 open_file(Arg1)
 open_file(Arg1, Arg2)
 os(Arg1)
 os_path(Arg1)
 process_create(Arg1, Arg2)