Indigenous is a short generic reference covering all Aboriginal and Torres Strait Island peoples. Always capitalise ’Indigenous’ when it refers to the original inhabitants of Australia. It needs no capitalisation when used in a general sense to refer to the original inhabitants of other countries.ndigenous is a short generic reference covering all Aboriginal and Torres Strait Island peoples. Always capitalise ’Indigenous’ when it refers to the original inhabitants of Australia. It needs no capitalisation when used in a general sense to refer to the original inhabitants of other countries.