In Loco Semantics is a digital content production and annotation methodology, designed to be blended with popular content producing tools, as word processors and spreadsheets. It is characterized by four principles:

  1. In Loco Annotation: the annotation process occurs concomitant to the content production (in loco).
  2. Metaphor Integration: the metaphors and models adopted in content annotation are aligned with those adopted for content production.
  3. Interoperability: in loco annotation strategies are designed to enable automatic information extraction and conversion to Semantic Web open standards.
  4. Semantic Persistence: in loco annotation elements are connected to unification ontologies, which will guarantee their equivalent interpretations in different contexts, subsidizing the semantic persistence among transformations.