(b) Other definitions applying to this Article and the sections in which they appear are:
"Appropriate person". Section 8-107.
"Control". Section 8-106.
"Delivery". Section 8-301.
"Investment company security". Section 8-103.
"Issuer". Section 8-201.
"Overissue". Section 8-210.
"Protected purchaser". Section 8-303.
"Securities account". Section 8-501.