KiXtart 4.12 shows using ingroup with quotes. P.72:

IF INGROUP("Domain Users")
Display "z:\users.txt"
ENDIF

IF INGROUP("Developers","Testers") = 1
? "Member of Developers OR Testers group"
ENDIF

I have read posts that say not to use quotes with INGROUP. Which is correct? Does it make a difference?