The following words define the interface between a templating engine and the furnace.boilerplate vocabulary.
The master/child template interface follows a pattern where for each concept there is a word called by the child to store an entity, and another word to write the entity out; this solves the problem where certain HTML tags, such as <title> and <link> must appear inside the <head> tag, even though those tags are usually precisely those that the child template will want to set.