traits Unlike formats, kind traits are simply used to categorize content, and don't cause content to be processed in a specific way. You must add one (and only one) kind trait per item. === article You should use this trait for self-contained articles in text format. === asset You should use this trait to indicate that the content is an asset of some kind, and it should be used in conjunction with other content, like images, videos, audio, or code. === book You should use this trait in case you plan to write a book or a manual using thoughts. === document You should use this trait for generic documents, typically but not necessarily in text format. === event You should use this trait for content tied to a specific date, like events or appointments. === help You should use this trait for documentation or help content. === idea You should use this trait for ideas and inventions. === letter You should use this trait for traditional letters or emails sent to a specific person. === note You should use this trait for short textual notes. === objective You should use this trait to keep track of goals and objectives. === opinion You should use this trait for content that expresses a specific opinion about someone or something. === page You should use this trait for pages of a web site. === person You should use this trait for content related to a specific person. === place You should use this trait for content related to a specific place or location. === project You should use this trait for content related to a specific project. === quote You should use this trait for quotes by a specific person or sayings. === thought You should use this trait when writing down your own thoughts. === tool You should use this trait for content related to a specific tool.