Quasi-complex nodes are a special type of nodes that occupy the same position (have the same functor) as complex nodes but they have no grammatemes, since lexical units corresponding to these nodes have no morphological categories. They are either newly established nodes occupying positions of all kinds of modifications, or they are nodes representing punctuation and other symbols present at the surface level. Both newly established nodes and nodes representing symbols present at the surface level have t-lemma substitutes, such as:
some of the following t-lemmas (in the argument/adjunct positions):
#Unsp (nodes with these t-lemmas are always quasi-complex nodes),
or some of the following t-lemmas (corresponding to non-alphabetical and non-numerical symbols):
#Percnt (also these nodes are always quasi-complex),
or some of the t-lemmas representing punctuation marks:
#Slash. Nodes with these t-lemmas are quasi-complex only in the case their functor is different from any functor usually assigned to paratactic structure root nodes (e.g. if they are assigned the
PRED functor; otherwise they are analysed as paratactic structure root nodes, see Section 3, "Paratactic structure root nodes").
For the description of the functors just mentioned, see Section 4, "T-lemma substitutes".
Quasi-complex nodes are defined by a t-lemma, functor and other attributes; they have no grammatemes.