Marquee Selection Tools

Settings

The settings for each tool vary but may include some or all of the following settings, which can be adjusted from the context toolbar:

• Mode—select from New, Add, Subtract, and Intersect.
• Feather—reduces the sharpness of selection edges by partially selecting edge pixels.
• From Centre—when enabled, the selection will be drawn from its centre. This is enabled by default.
• Antialias—if this option is off (default), pixels at the edge of the selection are opaque. When selected, selection edges are smoothed by applying transparency to edge pixels.
• Refine—tap to display the Refine Selection dialog to access advanced selection settings.
• Height—sets the height of the Row Marquee Tool.
• Width—sets the width of the Column Marquee Tool.
• Constrain—(on-screen modifier key) constrains the selection creation, either to an aspect ratio (eg square marquee) or to straight lines (polygon).
• Add—(on-screen modifier key) adds to the selection.
• Subtract—(on-screen modifier key) removes from the selection.
• Move—(on-screen modifier key) allows the selection so far to be transformed without changing its shape.

About selection modes

The four modes available from the context toolbar affect how your selection develops.

• New—cancels all current selections and creates a new selection.
• Add—adds areas to the current selection. If there is no selection in place, a new selection will be created.
• Subtract—removes areas from the current selection.
• Intersect—a new selection area is created from the overlap between the newly added selection area and the current selection.

Polygon marquee selection types

The Freehand Selection Tool offers three distinct selection types:

• Freehand—creates a selection which follows the cursor's exact movements.
• Polygonal—creates a selection based on connected straight lines with a single tap defining each change in direction.
• Magnetic—creates a selection by creating automatic nodes that snap to distinct edges while following the cursor's movement. Tap to define custom node positions.