When a frame holds more text than it can display, a [+] sign will
appear in the bottom right corner. If you want to display all the
text, you can either make the frame larger, or link it into a text
piping chain so that the surplus text flows into another frame. This
function is used to let text that no longer fits into the frame flow
to another frame, but without joining the frames in a piping
chain. This means that both frames will be independent of each
other, and that inserting or deleting text in one will not affect the
other. You can, however, use the Piping from frame to frame
function described above to join them into a piping chain later, if
you wish.
