Filer

Consider the example of adding B to thot A, with B describing a note:

• A has a  File to B
• A is a  Filer to B
• B is a  File to A
• B has a  Filer to A
• A is a header thot describing a note that is filed under B
• A is filed under B
• B sponsors A
• A is sponsored by B
• A is a filed note