As far as I can tell in looking under Tools | Customize | Languages and finding Dataflex and choosing Edit, there is no matching available. Also, no auto-formatting. All languages that are auto-formatted are done by the additional product, Polystyle, which supports the following languages:
You are correct, i guess. The document about creating such support looks daunting!
Would it be possible to say, as an example, how to create the auto formating for REPEAT LOOP or BEGIN END?
It seems the details get fuzzy on me just when i get to that level of detail.