Comment 33 for bug 1823087

It's not so much a question of the code difficulty, just the matter of bringing all of the various ZFM_SEGMENTS section up to date indefinitely into the future. This means handling printing, plotting, sketch display, connectivity, view items, click selection, etc. All of these are different for the segment fills. If we allow segments past loading, doing half measures of only allowing plotting is asking for bug reports, I fear.