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### 15.2 Frame Object

Frames are simply used to give the dialogue forms a nicer appearance. They can be used to visually group other objects together. Frames are almost the same as a box, except that the interior of the bounding box is not filled. Use of frames can speed up drawing in certain situations. For example, to place a group of radio buttons within an `FL_ENGRAVED_FRAME`. If we were to use an `FL_FRAME_BOX` to group the buttons, visually they would look the same. However, the latter is faster as we don’t have to fill the interior of the bounding box and can also reduce flicker. Frames are useful in decorating free objects and canvases.