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dfByte2Hex()
Converts a number value to hex decimal
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Syntax:

     dfByte2Hex(<nNum>) --> cHex

Parameters:

     <nNum>     Number to convert. 0 <= nNum <= 255

Returns:

     <cHex> converted Value

Description:

     Converts a number to hex decimal.  The value must be inclusive between
     0 and 255 respectably

Example:

     ? dfByte2Hex(0)       // " 00 "
     ? dfByte2Hex(16)      // " 10 "
     ? dfByte2Hex(255)     // " FF "

See also:

     dfHex2Dec(), dfLong2Hex()