Marquees select part of the image and allow only that part to be edited. The marquee can have any shape, and its border is marked by a flashing dotted line.
Bitmap with a marquee
See Also
Working with Bitmaps
Selecting the Entire Bitmap
Using the Marquee Tool
Using the Lasso Tool
Using the Magic Wand Tool
Clearing Marquees
Inverting Marquees
Converting Objects to Marquees
Converting Marquees to Objects
Using DesignCentral
Creating Bitmaps
Changing Bitmap Properties
Using the Bitmap Toolbar
Editing Bitmaps
Using Filters
Tracing Bitmaps