append-child

Inserts the item as the rightmost child of the node at this loc, without moving

edit

Replaces the node at this loc with the value of (f node args)

insert-child

Inserts the item as the leftmost child of the node at this loc, without moving

insert-left

Inserts the item as the left sibling of the node at this loc, without moving

insert-right

Inserts the item as the right sibling of the node at this loc, without moving

remove

Removes the node at loc, returning the loc that would have preceded it in a depth-first walk.

replace

Replaces the node at this loc, without moving