Tilemap tile offset

[pixel-boy]

In GameMaker, there was a pretty handy feature with tiles that allowed you to press the ALT key to place the tile with an offset, which allowed you to avoid getting stuck in the grid. I'm wondering if there might be a way to have something similar?

I don't know if it's compatible with the way tiles are managed, but at worst, it could be useful, at least for scenes instanced via the tilemap.