This attribute controls the appearance of an annotated
coordinate grid (drawn with the astGrid function) by determining
whether matching leading fields should be removed from adjacent
numerical axis labels. It takes a separate value for each physical
axis of a Plot so that, for instance, the setting "Abbrev(2)=0"
specifies that matching leading fields should not be removed on
the second axis.
If the Abbrev value of a Plot is non-zero (the default), then
leading fields will be removed from adjacent axis labels if they