Modifying objects using graphics frames

Adobe InDesign objects include any item you can add or create in the document window, including open paths, closed paths, compound shapes and paths, type, rasterized artwork, 3D objects, and any placed file, such as an image.

If a graphic exists inside a frame (as all imported graphics do), you can modify it by changing its relationship to its frame, as in the following examples:

Crop a graphic by making its frame smaller.
Create various masking and layout effects by pasting an object into a frame.
Add a keyline or outline to a graphic by changing the stroke weight and color of its frame.
Center a graphic against a background rectangle by enlarging its frame and setting the frame’s fill color.