2018.1

button when the shape of a tab appears at the bottom of the rectangle.
To switch between combined area:
l At the bottom of the combined area, click the tab of the area you want to bring to the top. If
all the tabs are not displayed, use the left and right arrows to navigate between them.
The left and right arrows lets you show hidden tabs.
To reorder tabs in a combined area:
l At the bottom of the combined area, click the tab of the area you want to move, drag it to
the left or right and drop it at the desired position.
Dragging a combined area to new position.
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