Drawing tools

The top bar has Move (V), Hand (H), Frame (F), Shapes and Text (T).

The shape cell draws whichever shape it's holding. Its caret opens the rest: Rectangle (R), Ellipse (O), Line (L), Triangle, Diamond, Star and Image placeholder (I). Picking one arms it.

Click with Text to place a text layer and start typing. Drag with any other tool to draw it at that size; hold Shift for a square.