preferred.mediaobject.role
— Select which mediaobject to use based on
this value of an object's role
attribute.
A mediaobject may contain several objects such as imageobjects.
If the parameter use.role.for.mediaobject
is
non-zero, then the role
attribute on
imageobject
s and other objects within a
mediaobject
container will be used to select which object
will be used. If one of the objects has a role value that matches the
preferred.mediaobject.role
parameter, then it
has first priority for selection. If more than one has such a role
value, the first one is used.
See the use.role.for.mediaobject
parameter
for the sequence of selection.