Mathematical Operators
Operator Description 
+  Add 
- Subtract 
* Multiply 
/ Divide 

Comparison Operators
Operator Description 
> Greater Than 
< Less Than 
>= Greater Than or Equal 
<= Less Than or Equal 
= Equal 

Boolean Operators
Operator Description 
! not NOT 
& and AND 
| or OR 

Operator Precedence
Operator precedence is divided into three groups as shown below. Multiple operators from the same group are evaluated left to right. You can use parenthesizes liberally to force a particular evaluation order as required.

Precedence Operators 
Highest  !  ()   
   *  /  &  
Lowest  +  -  >  <  >= <= = |   

Supported functions
Operator Description 
dt() The elapsed time interval, in seconds, since last iteration 
sin(x) Trigonometric SIN function x is in radians 
cos(x) Trigonometric COS function x is in radians 
sqrt(x) Square root  
min(x,y) lesser of  x or y 
max(x,y) greater of  x or y 
mod(x,y) Floating point modulus, remainder of x / y