Node Characteristics on the QueryDef menu is used to specify node characteristics on your structure.
Chain: Search results include only structures containing chain nodes at the specified location. This is the default for drawn nodes in a chain. Chain nodes can be changed to ring or ring/chain nodes. Changing node characteristics at either end of a bond does not change the bond value.
Ring: Search results include only structures containing ring nodes at the specified location. This is the default for nodes in rings and cannot be changed.
Ring/Chain: Search results include structures containing chain nodes or ring nodes at the specified location.
Mixture: The node characteristic when more than one node is selected with different node characteristics. It is selected in the dialog but is still grayed as it is not a user-selectable choice. Changing the node value changes all selected nodes, regardless of previous settings.
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