Note: since 1.4.1572.x, user can choose the action of the numeric keys. The below works only if the selected action is Split.
Select one or more horizontally aligned rules or boxes and then press the numeric key (1...9), corresponding to the number of objects you want to create. The object is duplicated specified number of times. The total width of the selection does not change.
Select one or more horizontally aligned image placeholders and then press and hold Shift and then press the numeric key (1...9), corresponding to the number of objects you want to create. The object is duplicated specified number of times. The total width of the selection does not change.
All split objects are independent, so you can move them, scale or delete individually.
If image placeholders have captions, captions are duplicated as well.
For boxes and rules, the color and border properties are maintained.