One question...

Theme: Rectangle, filled rectangle, image, inscribed rectangle

I need a rectangle with rounded corners. How to do it?
If you need an open rounded rectangle, draw an open rectangle and select it. You have to round each corner manually:

1 (Fig. 1: "Round corner" in the context menu of the little black box)

With a filled rectangle it is a little more difficult. You have to form it from 2 filled rectangles and 4 slices:

2 (Fig. 2: Left in X-ray view with [#] key)

Assembled from 6 elements.