Is there a way to automatically index the nodes?

[ooker777]

Let's say I pick a node as the source/root node. It's children will be indexed as 1, 2, 3. Children of 1 will be indexed as 1.1, 1.2, 1.3, etc. Children of 1.1 will be indexed as 1.1.1, 1.1.2, 1.1.3, etc. Is there a way to automatically do that? Perhaps with the combination of the plugin Templater.

If I make the indexing more complicate, by identify that the children of 1 are 1.1a, 1.1b, 1.2, and occasionally there will be an "upgraded" version of a node, and it will be indexed by a plus, i.e. 1+, 1.1a+. I understand that these things need to be done manually, but is it possible to make the script assume that the indexing for the children of a node should be normal, before I manually edit it?

Related question: Is there a way to make "close siblings"?