A flow object that is to be formatted so as to produce a
sequence of inline areas is said to be inlined. A flow object
that is to be formatted so as to produce a sequence of display
areas is said to be displayed. Instances of some flow object
classes can only be inlined; instances of others can only be displayed;
and instances of others can be either inlined or displayed. In the
last case, whether a flow object is to be inlined or displayed is
controlled by the characteristics of the flow object
or by whether the flow objects attached to its ports are themselves
inlined or displayed.
The class of a
flow object determines for each port of that flow object whether the
flow objects associated with that port shall be inlined, or whether they
shall be displayed, or whether they may be either inlined or displayed.
| The included-container-area flow object described in
section 12.6.16, Included-container-area Flow Object Class allows
a flow object that can only be displayed to occur indirectly
in a line without causing a break. For example, one may wish to mix
vertical Japanese in a line of English text without causing a break. |
|