oacDeleteOnUnknown |
"deleteUnknown" Applications should not use this value |
oacDeleteOnNever |
"deleteNever"
A marker with this attribute will only be destroyed when it is explicitly destroyed. The marker will remain even when it has no objects associated with it. |
oacDeleteOnFirst |
"deleteFirst"
A marker with this attribute will be destroyed when any of its associated objects is removed. |
oacDeleteOnLast |
"deleteLast"
A marker with this attribute will be destroyed when the last object associated with the it is removed. |
oacDeleteOnModify |
"deleteModified"
A marker with this attribute will be destroyed when any of its associated objects is modified. |