begin-container-sequence in area-container<%>
Suspends geometry management in the container's top-level window
until
end-container-sequence is called. The
begin-container-sequence and
end-container-sequence methods are used to bracket a set of container modifications so that
the resulting geometry is computed only once. A container sequence also
delays show and hide actions by
change-children, as well as the on-screen part of showing via
show until the sequence is complete. Sequence begin and end commands may
be nested arbitrarily deep.