group
The order in which vector layers are auto-annotated in graphic_window. The only layer which has this attribute is the window's annotation layer.
The layer.group_order array is a list of group identifiers each of which must be present in the window's group order (and will consequently have a corresponding vector layer). Any groups in the list which do not satisy this criteria will not be auto-annotated.
No group may be entered into the order more than once. In such cases, only the first occurrence is used, and other occurrences are removed from the order by the system.
New windows have an empty annotation layer group list, implying no auto-annotation to be done.
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