contextually bound, (EER: 1:100), see Example (6) from PCEDT.
the sentence members that appear only implicitly in the sentence (as the Addressee in this case) are not supposed to carry some new, important information (because their presence in the /surface part of the/ sentence is not necessary) and therefore they are automatically pre-annotated as contextually bound (furand the tectogrammatical layer) are displayed as small circles in the figure.