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lang-mma
Identityfor theItemDisplayFunction. $\endgroup$ItemDisplayFunction -> Identitydid not work. $\endgroup$ItemDisplayFunction -> (Identity[#] &)works but this is less elegant than your solution. $\endgroup$ItemDisplayFunction's documentation. The function takes 3 parameters.({i, p, d} |-> i)for example. $\endgroup$Identityinstead of a shorthand pure function. $\endgroup$