NY ship manifest code questions #general

Sheryl Stahl

There seem to be 2 codes to the left of my ggm's name (Czarna Stahl)
I know that S.I. is for Special Inquiry - but what is the WW?
On the list of  Aliens held for Special Inquiry, I know that LPC is Likely  Public Charge - but what is the "call book?"

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