Hello Ellen,
First of all thanks for that great editor you are currently developing! I love it already and would never want to switch back :)
I have one question regarding a vertical scrolling game and the attributes in the editor when changing from screen/nametable 0 to 2. I built a map with multiple screens, in multiples of 30 tiles. The last row of attributes on the NES is only two tiles high, but the Nexxt editor seems not to take that into account (or I haven't found that button yet ;). It creates a new attribute for that remaining half one from the first screen and then only the first half of the first row of attributes from the second screen. From there it seems to be off until it changes to the next screen again. Is there a way to work around that issue?
Greetings from Switzerland, Yves
Edit: I made a little graphic to explain it better: 