Just a correction to what I suggested above: While in theory you should be able to call Glk extensions such as garglk_unput_string() from a Glulxe game, as far as I know it is not currently possible in Gargoyle, or any other existing Glk implementation, as those extended functions are not implemented in the dispatch layer (unlike, say, the Zcolor functions.) I suppose this is another candidate for an official extension of the Glk API.
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