class 8
Class 8 operators include the unary arithmetic operators + and -.

The operand must be an integer or floating point expression.  The result is the data type of the operand.

class 9
Class 9 operators include the unary logical operators ! and !!.

The operand must be an integer or floating point expression.  The result is always $$TRUE or $$FALSE .

class 10
Class 10 operators include the unary bitwise operators ~ and NOT .

The operand must be an integer variable or expression, or a function name.  When applied to GIANT operands, the result data type is GIANT.  Otherwise the result data type is XLONG.

class 11
Class 11 operators include the unary address operators & and &&.

The operand of & must be a variable, string, composite, whole array, array node, or array data element.  The operand of && must be a string, whole array, or string in a string array.  The result data type is always XLONG.

operator summary
The following table is a summary of the characteristics of all operators recognized by the language: 

OP  ALT  KIND  CLASS  OPERANDS  RETURNS  PREC  COMMENTS
&    unary  10  AnyType  Address  12  Address of Object Data
&&    unary  10  AnyType  Address  12  Address of Object Handle
!    unary  9  Numeric  T/F  12  Logical Not (TRUE if 0, else FALSE)
!!    unary  9  Numeric  T/F  12  Logical Test (FALSE if 0, else TRUE)
NOT  ~  unary  9  Integer  SameType  12  Bitwise NOT
+    unary  8  Numeric  SameType  12  Plus
-    unary  8  Numeric  SameType  12  Minus
>>>    binary  7  Integer  LeftType  11  Arithmetic Up Shift
<<<    binary  7  Integer  LeftType  11  Arithmetic Down Shift
<<    binary  7  Integer  LeftType  11  Bitwise Left Shift
>>    binary  7  Integer  LeftType  11  Bitwise Right Shift
**    binary  4  Numeric  HighType  10  Power
/    binary  4  Numeric  HighType  9  Divide
*    binary  4  Numeric  HighType  9  Multiply
\    binary  6  Numeric  Integer  9  Integer Divide
MOD    binary  6  Numeric  Integer  9  Modulus (Integer Remainder)
+    binary  5  Numeric  HighType  8  Add
+    binary  5  String  String  8  Concatenate
-    binary  4  Numeric  HighType  8  Subtract
AND  &  binary  3  Integer  HighType  7  Bitwise AND
XOR  ^  binary  3  Integer  HighType  6  Bitwise XOR
OR  |  binary  3  Integer  HighType  6  Bitwise OR
>  !<=  binary  2  NumStr  T/F  5  Greater-Than
>=  !<  binary  2  NumStr  T/F  5  Greater-Or-Equal
<=  !>  binary  2  NumStr  T/F  5  Less-Or-Equal
<  !>=  binary  2  NumStr  T/F  5  Less-Than
<>  !=  binary  2  NumStr  T/F  4  Not-Equal
=  ==  binary  2  NumStr  T/F  4  Equal (also "!<>")
&&    binary  1  Integer  T/F  3  Logical AND
^^    binary  1  Integer  T/F  2  Logical XOR
||    binary  1  Integer  T/F  2  Logical OR
=    binary    NumStr  RightType  1  Assignment
          T/F    T/F always returned as XLONG