Is the string is a member of the list of strings ?
The string to find
A list of strings to search
Dim s1 as string
Dim s2 as string
Dim s3 as string
s1 = "three"
s2 = "blind"
s3 = "mice"
print xf.Str.StringInParamList("three", s1, s2, s3) => True
print xf.Str.StringInParamList("one", s1, s2, s3) => False