Yes, this fixes both issues, thanks. As for priority change, should I now call common.defaut.display_x handlers from n810 display_x ones? I guess in theory I should.

BTW, the language is a bit limiting, logical operators or subexpressions in 'if' would be nice or nested if-s like if something1 if something2 handler1. Also command blocks {} could be handy in that case (of nested ifs). But true that such issues can be solved by defining more intermediate handlers and chaining them.