The technical root of a tectogrammatical tree is an artificial node with special attribute values, which include the sentence identification in the corpus, in the first place; see Table 11.1, "Attributes of the technical root node of a tectogrammatical tree"). The root of a tectogrammatical tree is called technical root node. The value in its
nodetype attribute is always
The technical root of a tectogrammatical tree is assigned neither the attribute
functor nor the attribute
The technical root node has always exactly one daughter node, which is either the root node of a paratactic structure (see Section 3, "Paratactic structure root nodes"), or the effective root node of an independent clause (verbal, or non-verbal; see Section 4, "Verbal and non-verbal clauses"), i.e. a node bearing one of the following functors:
PAR; see Section 1, "Functors for the effective roots of independent clauses").