Hello,

Not all the parts in the database have connecting points yet. Those two don't.
I'm adding new ones pretty much everyday but with thousands of parts the work is quite big 😉
You can check current part data on this page.

For now, to locate the window in the frame, you can change the grid to "small" (Q key) and use the arrows to move the window to the correct location in the frame. If you really want the points for those parts, let me know and I'll add them.

thank you for answer! i really love this site! 😄

Thank you!
Don't hesitate to ask question if you are stuck. I'll try to answer as clearly as I can!

do you think that those bricks from this "http://www.lego.com/en-us/minecraft" set could be added into Mecabricks?