Recursive help searching

The new Block implementation allows us to provide information on what specifically is required by command arguments. However, a specific method returning all found micro-block nodes should exist in order for the help command to operate more smoothly

Start by reading the new Block implementation and the help command entry point to understand how command arguments expose required information. The work is done when a method can recursively return all found micro-block nodes and the help command uses that result to search more smoothly.

Written by the indexing model from the issue text.