See anchor tag
In desktop publishing, a format code that keeps a graphic near or next to a text paragraph. If text is added, causing the paragraph to move to a subsequent page, the graphic image is moved along with the anchor.
In a GUI builder (development environment for creating a user interface), a format code that keeps a button, message or other interface control aligned to some part of the window. When the window is expanded, the corners of the control that are not anchored move with the window borders, but not the anchored corner. See user interface control