  We state and prove a number of unilateral and bilateral $q$-series identities
and explore some of their consequences. Those include certain generalizations
of the $q$-binomial sum which also generalize the $q$-Airy function introduced
by Ramanujan, as well as certain identities with an interesting
variable-parameter symmetry based on limiting cases of Heine's transformation
of basic hypergeomteric functions.
