... queried separately, e.g., the query[gend=masc] could be used to search for masculinesegments, regardless of the POS or other categories,while the query [pos="subst|ger" & gend!=masc]can ... over corpus po-sitions, e.g.: [pos="adj"]+, where any non-emptysequence of adjectives is sought, or within valuesof attributes, e.g.: [pos="a.*"], concerning forms(henceforth: ... index-ing and searching morphosyntactically an-notated corpora, which turn it into a tool forindexing and searching certain kinds of tree-banks, complementary to existing treebank search engines....