Template:Tree

Apply a template to a string, and then recursively apply this function to each "child", as defined by a function.

• First parameter: Root of the tree
• Second parameter: Delimiter used to separate each application of the template; default is comma+space
• template: Template to apply to each node (first parameter is the node; depth and index are the tree coordinates, 1-based)
• children: Function mapping a parent to children (first parameter is the node; second parameter is the requested index, 1-based; empty indicates no more children)
• skip root: Whether the root of the tree should be skipped; if so, the root's children have depth 1