  The unique, conical spacetime created by cosmic strings brings about
distinctive gravitational lensing phenomena. The variety of these distinctive
phenomena is increased when the strings have non-trivial mutual interactions.
In particular, when strings bind and create junctions, rather than
intercommute, the resulting configurations can lead to novel gravitational
lensing patterns. In this brief note, we use exact solutions to characterize
these phenomena, the detection of which would be strong evidence for the
existence of complex cosmic string networks of the kind predicted by string
theory-motivated cosmic string models. We also correct some common errors in
the lensing phenomenology of straight cosmic strings.
