Hi!
If I'm make a building and I want to add windows... How can I make the windows transparent?
How can I make the glass transparent?
Similar question, how to display fences?
You can use transparency on png, however it's not really recommended.
Transparency is a quirky thing and I wasn't even thinking about it when making the editor.
As for fences - you'll have to use either 3d models or custom tiles.