Various atom properties can be added to an atom. The property key and the value can be freely set in the Edit Properties dialog. To do this, follow the steps below.
If an invalid value is set, (after clicking OK) the background changes to pink and the wrong input cannot be saved.
The display of the atom properties can be switched on and off by using View > Advanced > Atom properties.
The chemical neighborhood for an atom within a query structure can be defined in MarvinSketch. For the available query atom properties, see the Advanced tab.