[NTG-context] \startitem [reference=xxx]

Hello, An item in an itemized list can have a reference: \startitemize [n] \item[first] This is a first item; \item[second] This is a second item. \stopitemize \in{item}[first] appears before \in{item}[second]. How does this work with \startitem\stopitem? I tried, of course: \startitem[reference=first] This is a first item. \stopitem Thanks. Alan