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1. Left-click a grid square fragment and drag the viewing tile to the grid square, or drag the square to any of the layout windows (see Moving viewing tiles).
2. Left-click a grid square fragment and resize it (see Resizing a viewing tile).
3. Left-click a grid square fragment and select a video camera in it (see Selecting a video camera in a viewing tile).

Viewing tiles are added in rows. For example, when editing a six-square (3*2) layout, a column of two grid squares is added when a fragment is chosen on the left or right side of the screen.

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