The text in a frame can be independent of other frames, or it can flow between connected frames. To flow text between connected frames, you must first connect the frames. Connected frames can be on the same page or spread, or on another page in the document. The process of connecting text among frames is called threading text.
Each text frame contains an in port and an out port, which are used to make connections to other text frames. An empty in port or out port indicates the beginning or end of a story, respectively. An arrow in a port indicates that the frame is linked to another frame. A red plus sign (+) in an out port indicates that there is more text in the story to be placed but no more text frames in which to place it. This remaining unseen text is called overset text.
Choose View > Show Text Threads to see visual representatives of threaded frames. You can thread text frames whether or not they contain text.
When you unthread a text frame, you break the connection between the frame and all subsequent frames in the thread. Any text that previously appeared in the frames becomes overset text (no text is deleted). All subsequent frames are empty.
Double-click an in port or out port to break the connection between frames.
Click an in port or an out port that represents
a thread to another frame. For example, in a two-framed thread,
click either the out port of the first frame or the in port of the
second frame. Position the loaded text icon over the previous or
next frame to display the unthread icon . Click
in the frame.