A new element is created by dragging the chosen type from the bar on the left, and dropping it to the desired location.
The number of elements that can be inserted into a page is not restricted.
After selecting any element in the page, it can be deleted by clicking the button in its popup.
Drag the element using the left mouse button pressed and release the button at the desired location.
During dragging, possible dropping points appear, represented by a blue or red line.
Blue Line: a position close to an existing item.
Red Line: creating a new cell that causes automatic distribution of available space.
It can be necessary to press <Shift> key while dragging to see somme red lines.
By pressing the <ctrl> key while dragging, the element will be copied to the drop location, leaving the original at its position.