Thanks for discovering the meaning of the select and map-level statement in Thbook.  Another mystery unraveled!

I am also a bit uncertain on ‘revise’ and would look forward to any examples related to Xaviers example.  Based on some forum posts, I have managed to use it successfully to change the –station-names settings from within a scrap as in halfway down this page http://therion.speleo.sk/wiki/doku.php/paperless?s[]=revise 

I can imagine that the preferable ‘select – map-level’ behaviour would differ for ‘export map’ and ‘export atlas’, and that might be why the map-level has to “match exactly”.

I’d better leave it to someone who knows what they are talking about…
Bruce