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Is Palindrome Function
String Words Class

Public Function IsPalindrome( _
    ByVal vValue As Variant _
    ) As Variant

Return True if the alphanumeric characters in the string are a palindrome.
A palindrome is a phrase whose alphanumeric characters are the same when they are reversed.

Examples: 
    IsPalindrome("This is a test.") = False
    IsPalindrome("A man, a plan, a canal, Panama.") = True
    IsPalindrome(Panama) = True
See also: 
    ReverseString Function
    StrReverse Function (Visual Basic)
    IsAnagram Function
    IsAlliteration Function
vValue: The string containing the phrase which is to be checked to see if it is a palindrome. Function returns Null if vValue is Null or cannot be fixed up to a String.

Note: Function uses the built-in character classification routines to determine which characters are alphanumeric.

Note: Function returns False if there are no alphanumeric characters in the string vValue since an empty string is not considered a palindrome.

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