This is the readme for the model associated with
Sun J, Pang ZP, Qin D, Fahim AT, Adachi R, Sudhof TC.
A dual-Ca2+-sensor model for neurotransmitter release
in a central synapse. Nature. 2007 Nov 29;450(7170):676-82.
The author's igor-pro function that defines the dual
Ca2+ sensor is supplied.