3. To be considered a Thing, however, at least one TD representation MUST be available. ([arch-td-mandatory](https://www.w3.org/TR/wot-architecture11/#arch-td-mandatory))

3. To be considered a Thing, however, at least one TD representation MUST be available. ([arch-td-mandatory](https://www.w3.org/TR/wot-architecture11/#arch-td-mandatory)) #298