The purpose of the kin operator with examples:
- Finds related tags, related tiddlers in any depth
- Finds out where base tiddler originates and what other elements originate from it
- Finds the ancestors and successors of a family member
- Finds the "leaves" of the branch of the base tiddler in a tree-like structure (where the base tiddler is a leaf)
- Finds the super- and subsets / groups of a mathematical set (where the base tiddler is a set)