How to rotate a section of the map?

Questions
1

Is there any way to select a group of tiles, either on one layer or multiple layers, and rotate them by 90 degrees? How can I do that?

Thanks
Bob

2

You can not do this with multiple layers currently.

To do it for a single layer, select the Stamp Brush, right-click-drag the area you want to rotate (it’ll get captured and becomes the current stamp), press Z (or Shift+Z) to perform the rotation on the current stamp and then paint down the stamp as usual.

If you need to get rid of tiles because the area is partly transparent, use instead the Rectangular Select tool, select the area you want to rotate, cut (Ctrl+X), paste (Ctrl+V) and then perform the rotation same way as above.

3

OK, great thanks!