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Is Graph Function
Character Types Class

Public Function IsGraph( _
    ByVal vCharCode As Integer _
    ) As Boolean

"Is Character Graphical"
Return True if the character with ASCII value vCharCode is a "graphical" character; return False otherwise.
The "graph" classification includes alphanumeric (alphabetical and numeric) and punctuation characters.

Examples: 
    IsGraph(Asc("7")) = True
    IsGraph(Asc("%")) = True
    IsGraph(Asc(vbCr)) = False
See also: 
    IsAlNum Function
    IsPunct Function
    CharTypeGraph Property
vCharCode: Character whose ASCII value is checked to determine if it belongs to the "graph" class.
Note: Function will generate a runtime error if vCharCode is not between 0 (zero) and 255 inclusive.

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