CCL	Center column	References are printed in a narrow column in the center of the page between two columns of text.
PGE	Page end	References are printed at the foot of the page.
SID	Side column	References are printed in a column to the side of the scripture.
VER	Verse end	References are printed at the end of the applicable verse.
UNK	Unknown	The person creating the ONIX record does not know where the references are located.
ZZZ	Other	Other locations not otherwise identified