| Subject | Verb | Direct Object | 
| Research11 | References | Sample12. | 
| Relationship | Meaning | Active/ | 
| References | Used when one article mentions another's Traction ID. This is referred to as a "reference" or "citation" | references referenced by | 
| Comments | One article is a comment on another | comments on commented on by | 
| Relates | Used when adding a related article to a Project from the Related Article section in a Project Dashboard | is related to | 
| Changes Labels | Reclassification records use this relationship. | changes labels changes labels by | 
| Updates | When an article is edited, the newer article expresses an "updates" relationship with the original. | updates updated by | 
| Emails | When an article is enclosed in an outgoing email, it has an "emailed by" relationship with the article posted as the cover letter. | emails emailed by | 
| Replies | When an email reply is sent from Traction, the replies relationship is used. | replies to is replied to by | 
| Erases | When an article is erased, this relationship is used between the article and the explanation for the erasure. | erases erased by | 
| Trackbacks | When a TrackBack is received from outside Traction and is posted, this relationship is established between the TrackBack and the article it refers to. | trackbacks | 
| Pings | When traction sends a TrackBack ping and the ping is logged, this relationship is used to associate the article and the contents of the ping. | pings | 
| Describes | Not currently used. | describes described by | 
| Summarizes | Not currently used. | summarizes summarized by | 
| Agrees | Not currently used. | agrees with agreed with by | 
| Disagrees | Not currently used. | disagrees disagreed with by |