Symbology Expressions?

Discussion created by andrewhayden on Nov 9, 2011
I have an 8 character field where character 1, 2-4, 5-6 and 7-8 each represent different attributes.  I was wondering if there's a way in ArcMap to extract the appropriate characters (Mid(string,2, 3) for example) and group and symbolize the like features without having to create and calc new fields and symbolize accordingly?