[String->IsAlnum] checks whether a specified character within the string object is alphanumeric. If the parameter specifying the position of the character to be examined is omitted, then the default position 1 (or first character in the string object) is examined. The method returns True if the examined character is alphanumeric or False otherwise.
'String Object'->isalnum 'String Object'->isalnum(integer)
Use the [String->IsAlnum] method. The following example returns False since the sixth character of the string is not alphanumeric, but a space.
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