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The Rectangle, elliptical, single row,
and single column tools.
The marquee tools
The marquee tools are used for a wide variety of things
in photoshop. The tools come in 4 flavors, rectangular, elliptical, single
row, and single column. There is also the crop tool which we will touch
on in a few. The marquee's are used generally for selecting areas of the
image, or to draw shapes of the respective types.
Options
Shift constrains aspect ratio if no other selection
is active. Shift adds to the selection if another selection is active.
Using the ctrl keys, will allow you to make cutouts of the shapes you
create, and using the ALT keys in combination with the marquee, you can
create shapes using the background color as a fill.
Alternates
Rectangular: sets marquee shape to rectangular.
Elliptical: sets marquee shape to elliptical.
Single Row: only a single row of pixels are selected.
Single Column: only a single column of pixels are selected.
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