The linked text frames can be resized and moved individually but if the resizing of one text frame changes the amount of text it can hold, the text reflows between the linked text frames. If you add text to a frame, text at the bottom of the frame will move to the next linked frame. If you delete text from a frame, text from the top of the next linked frame will move to the bottom of the frame you deleted text from.
The method of linking two text frames differs from one program to the next. The process generally involves selecting one text frame and using a special text linking tool to link to another text frame or clicking on an icon or port that indicates that there is overflow text then clicking or dragging that text to another text frame.
A text frame that contains more text than will fit into the frame may display some type of overflow or overset text indicator to let you know that you need to either edit the text, resize the frame, or create a linked text frame to hold the excess text.
In some programs, linking text frames is referred to as threading and the linked frames are threaded text frames.
